subject:(blade)

University of Manchester

1. Jousselin, Olivier Yves Jean pierre. Development of Blade Tip Timing Techniques in Turbo Machinery.

Degree: 2013, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:211617

► In the current gas turbine market, the traditional design-test-redesign loop is not a viable solution to deploy new products within short timeframes. Hence, to keep… (more)

▼ In the current gas turbine market, the traditional design-test-redesign loop is not a viable solution to deploy new products within short timeframes. Hence, to keep the amount of testing to an absolute minimum, theoretical simulation tools like Finite Element Modelling (FEM) have become a driving force in the design of blades to predict the dynamic behaviour of compressor and turbine assemblies in high-speed and unsteady flows. The predictions from these simulation tools need to be supported and validated by measurements. For the past five years, Rolls-Royce Blade Tip Timing (BTT) technology has been replacing rotating Strain Gauge systems to measure the vibration of compressor blades, reducing development times and costs of new aero engine programmes.The overall aim of the present thesis is to progress the BTT technology to be applied to aero engine turbine modules. To this end, the two main objectives of this project are:i. To improve the current validated Rolls-Royce BTT extraction techniques, through the development of novel algorithms for single/multiple asynchronous and responses.ii. To validate the improved extraction using simulated and real engine test data in order to bring the Turbine BTT technology to a Rolls-Royce Technology Readiness Level (TRL) of 4 (i.e. component and/or partial system validation in laboratory environment).The methodology adopted for the development of the novel algorithms is entirely based on matrix algebra and makes extensive use of singular value decomposition as a means for assessing the degree optimisation achieved through various novel manipulations of the input (probe) raw data. The principle contributions of this thesis are threefold:i. The development of new BTT matrix-based models for single/multiple non-integral and integral engine order responses that removed certain pre-processing assumptions required by the current method.ii. The development of BTT technology to operate under the constraint of having equally spaced probes, which is unavoidable in turbines and renders current BTT methods unusable for turbine applications.iii. The development of methods for extracting measurement uncertainty and signal to noise ratios that are based solely on the raw data, without reliance on simulated reference data.Following the verification and validation of the new processing algorithms against simulated data and against validated software with numerous examples of actual engine test data, a Rolls-Royce’s Research & Technology (R&T) Critical Capability Acquisition and Capability Readiness (CCAR) review has accredited the novel techniques with a TRL of 4. Advisors/Committee Members: Bonello, Philip.

Subjects/Keywords: Blade Tip Timing; Turbine Blade

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jousselin, O. Y. J. p. (2013). Development of Blade Tip Timing Techniques in Turbo Machinery. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:211617

Chicago Manual of Style (16^th Edition):

Jousselin, Olivier Yves Jean pierre. “Development of Blade Tip Timing Techniques in Turbo Machinery.” 2013. Doctoral Dissertation, University of Manchester. Accessed March 03, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:211617.

MLA Handbook (7^th Edition):

Jousselin, Olivier Yves Jean pierre. “Development of Blade Tip Timing Techniques in Turbo Machinery.” 2013. Web. 03 Mar 2021.

Vancouver:

Jousselin OYJp. Development of Blade Tip Timing Techniques in Turbo Machinery. [Internet] [Doctoral dissertation]. University of Manchester; 2013. [cited 2021 Mar 03]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:211617.

Council of Science Editors:

Jousselin OYJp. Development of Blade Tip Timing Techniques in Turbo Machinery. [Doctoral Dissertation]. University of Manchester; 2013. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:211617

University of Manchester

2. Jousselin, Olivier. Development of blade tip timing techniques in turbo machinery.

Degree: Thesis (Eng.D.), 2013, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/development-of-blade-tip-timing-techniques-in-turbo-machinery(da682144-7009-4cdc-8f52-ff7cd0cf1cf1).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764241

► In the current gas turbine market, the traditional design-test-redesign loop is not a viable solution to deploy new products within short timeframes. Hence, to keep… (more)

▼ In the current gas turbine market, the traditional design-test-redesign loop is not a viable solution to deploy new products within short timeframes. Hence, to keep the amount of testing to an absolute minimum, theoretical simulation tools like Finite Element Modelling (FEM) have become a driving force in the design of blades to predict the dynamic behaviour of compressor and turbine assemblies in high-speed and unsteady flows. The predictions from these simulation tools need to be supported and validated by measurements. For the past five years, Rolls-Royce Blade Tip Timing (BTT) technology has been replacing rotating Strain Gauge systems to measure the vibration of compressor blades, reducing development times and costs of new aero engine programmes. The overall aim of the present thesis is to progress the BTT technology to be applied to aero engine turbine modules. To this end, the two main objectives of this project are: i. To improve the current validated Rolls-Royce BTT extraction techniques, through the development of novel algorithms for single/multiple asynchronous and responses. ii. To validate the improved extraction using simulated and real engine test data in order to bring the Turbine BTT technology to a Rolls-Royce Technology Readiness Level (TRL) of 4 (i.e. component and/or partial system validation in laboratory environment). The methodology adopted for the development of the novel algorithms is entirely based on matrix algebra and makes extensive use of singular value decomposition as a means for assessing the degree optimisation achieved through various novel manipulations of the input (probe) raw data. The principle contributions of this thesis are threefold: i. The development of new BTT matrix-based models for single/multiple non-integral and integral engine order responses that removed certain pre-processing assumptions required by the current method. ii. The development of BTT technology to operate under the constraint of having equally spaced probes, which is unavoidable in turbines and renders current BTT methods unusable for turbine applications. iii. The development of methods for extracting measurement uncertainty and signal to noise ratios that are based solely on the raw data, without reliance on simulated reference data. Following the verification and validation of the new processing algorithms against simulated data and against validated software with numerous examples of actual engine test data, a Rolls-Royce's Research & Technology (R&T) Critical Capability Acquisition and Capability Readiness (CCAR) review has accredited the novel techniques with a TRL of 4.

Subjects/Keywords: 629.13; Blade Tip Timing; Turbine Blade

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jousselin, O. (2013). Development of blade tip timing techniques in turbo machinery. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/development-of-blade-tip-timing-techniques-in-turbo-machinery(da682144-7009-4cdc-8f52-ff7cd0cf1cf1).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764241

Chicago Manual of Style (16^th Edition):

Jousselin, Olivier. “Development of blade tip timing techniques in turbo machinery.” 2013. Doctoral Dissertation, University of Manchester. Accessed March 03, 2021. https://www.research.manchester.ac.uk/portal/en/theses/development-of-blade-tip-timing-techniques-in-turbo-machinery(da682144-7009-4cdc-8f52-ff7cd0cf1cf1).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764241.

MLA Handbook (7^th Edition):

Jousselin, Olivier. “Development of blade tip timing techniques in turbo machinery.” 2013. Web. 03 Mar 2021.

Vancouver:

Jousselin O. Development of blade tip timing techniques in turbo machinery. [Internet] [Doctoral dissertation]. University of Manchester; 2013. [cited 2021 Mar 03]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/development-of-blade-tip-timing-techniques-in-turbo-machinery(da682144-7009-4cdc-8f52-ff7cd0cf1cf1).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764241.

Council of Science Editors:

Jousselin O. Development of blade tip timing techniques in turbo machinery. [Doctoral Dissertation]. University of Manchester; 2013. Available from: https://www.research.manchester.ac.uk/portal/en/theses/development-of-blade-tip-timing-techniques-in-turbo-machinery(da682144-7009-4cdc-8f52-ff7cd0cf1cf1).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764241

NSYSU

3. Pan, Hsin-hua. Studies and design of horizontal-axis water turbines for electricity generation in an ocean current.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2011, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0902111-182840

► In this thesis, the turbine blade design eligible for ocean current conditions is proposed using blade element momentum theory. in the beginning, the performance of… (more)

▼ In this thesis, the turbine blade design eligible for ocean current conditions is proposed using blade element momentum theory. in the beginning, the performance of water turbines is evaluated by CFD (computational fluid dynamics) package code, so as to design the suitable turbine under various conditions. The blade design encompasses parameters of the hydrofoil selection and blade shape which affect the turbine performance. Shortly following the investigation of the aforementioned parameters, the turbineâs performance with radius of two meter is also studied. The current conditions include the yaw and the pitch angle of the turbine relative to the current flow direction, as well as the periodic flow conditions on the performance of the water turbine. Lastly, the electricity generation is estimated by the present device. The results show that hydrofoils with less changes in the angle of attack with respect to the lift-drag ratio help enhance the turbineâs performance. The feedback mechanism is added to the blade design procedure to make sure that the turbine design caters to the best angle of attack. A turbine with two-meter radius can garner 34% of the sea current energy at most, living up to the project goal of exceeding the efficiency of 30%. The simulated test indicates that the adequate enlargement of the blade not only sustains the maximal efficiency, but it also lowers the stress imposed on the blade. Given the ocean current conditions, it is also shown that the turbineâs efficiency is proportional to the cubic cosine incident angle of inflow velocity alongside with the enlargement of the turbine radius. When it comes to the current electricity generation, from the in-situ measurement data, the current maximal velocity near the sea region is around 1.3 m/s. If incorporated with the self excited induction generator with the efficiency of 55%, a one-meter-radius turbine is estimated to be able to generate 530W at most, while a two-meter-radius turbine is estimated to generate 2.5KW. However, the use of the permanent magnet generator can produce 45% more electricity than a self excited induction generator. Advisors/Committee Members: Long-Jeng Chen (committee member), Chai-Cheng Huang (chair), Shih-An Yang (chair), Bang-Fuh Chen (chair).

Subjects/Keywords: water turbine; ocean current; blade element momentum theory; blade shape; blade design

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pan, H. (2011). Studies and design of horizontal-axis water turbines for electricity generation in an ocean current. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0902111-182840

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Pan, Hsin-hua. “Studies and design of horizontal-axis water turbines for electricity generation in an ocean current.” 2011. Thesis, NSYSU. Accessed March 03, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0902111-182840.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Pan, Hsin-hua. “Studies and design of horizontal-axis water turbines for electricity generation in an ocean current.” 2011. Web. 03 Mar 2021.

Vancouver:

Pan H. Studies and design of horizontal-axis water turbines for electricity generation in an ocean current. [Internet] [Thesis]. NSYSU; 2011. [cited 2021 Mar 03]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0902111-182840.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Pan H. Studies and design of horizontal-axis water turbines for electricity generation in an ocean current. [Thesis]. NSYSU; 2011. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0902111-182840

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Wisconsin – Milwaukee

4. Alsultan, Abdulrahman A. Computational and Experimental Study on Innovative Horizontal-Axis Wind Turbine Blade Designs.

Degree: MS, Engineering, 2015, University of Wisconsin – Milwaukee

URL: https://dc.uwm.edu/etd/791

► This study was made to explore three novel blade geometries with intent to increase power production of a horizontal axes, three blade arrangement wind… (more)

Subjects/Keywords: Blade Design; Horizontal Axis Wind Turbines; Innovative Blade; Slotted Blade; Tubercle Blade; Wind Tunnel; Aerospace Engineering; Oil, Gas, and Energy

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Alsultan, A. A. (2015). Computational and Experimental Study on Innovative Horizontal-Axis Wind Turbine Blade Designs. (Thesis). University of Wisconsin – Milwaukee. Retrieved from https://dc.uwm.edu/etd/791

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Alsultan, Abdulrahman A. “Computational and Experimental Study on Innovative Horizontal-Axis Wind Turbine Blade Designs.” 2015. Thesis, University of Wisconsin – Milwaukee. Accessed March 03, 2021. https://dc.uwm.edu/etd/791.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Alsultan, Abdulrahman A. “Computational and Experimental Study on Innovative Horizontal-Axis Wind Turbine Blade Designs.” 2015. Web. 03 Mar 2021.

Vancouver:

Alsultan AA. Computational and Experimental Study on Innovative Horizontal-Axis Wind Turbine Blade Designs. [Internet] [Thesis]. University of Wisconsin – Milwaukee; 2015. [cited 2021 Mar 03]. Available from: https://dc.uwm.edu/etd/791.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Alsultan AA. Computational and Experimental Study on Innovative Horizontal-Axis Wind Turbine Blade Designs. [Thesis]. University of Wisconsin – Milwaukee; 2015. Available from: https://dc.uwm.edu/etd/791

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Karlstad University

5. Sten, Niklas Öhrn. Design and development of a new invented doctor blade : Design och utveckling av nyuppfunnet kräppningsblad.

Degree: Mechanical and Materials Engineering, 2014, Karlstad University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-33183

► This report contains the development and construction of a new patented doctor blade. A doctor blade is used when creping soft paper from a… (more)

Subjects/Keywords: Doctor blade; Design; Development; Kräppningsblad

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APA (6^th Edition):

Sten, N. �. (2014). Design and development of a new invented doctor blade : Design och utveckling av nyuppfunnet kräppningsblad. (Thesis). Karlstad University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-33183

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sten, Niklas Öhrn. “Design and development of a new invented doctor blade : Design och utveckling av nyuppfunnet kräppningsblad.” 2014. Thesis, Karlstad University. Accessed March 03, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-33183.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sten, Niklas Öhrn. “Design and development of a new invented doctor blade : Design och utveckling av nyuppfunnet kräppningsblad.” 2014. Web. 03 Mar 2021.

Vancouver:

Sten N�. Design and development of a new invented doctor blade : Design och utveckling av nyuppfunnet kräppningsblad. [Internet] [Thesis]. Karlstad University; 2014. [cited 2021 Mar 03]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-33183.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sten N�. Design and development of a new invented doctor blade : Design och utveckling av nyuppfunnet kräppningsblad. [Thesis]. Karlstad University; 2014. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-33183

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

KTH

6. Mora, Enrique Carrasco. Variable Stator Nozzle Angle Control in a Turbocharger Inlet.

Degree: Heat and Power Technology, 2015, KTH

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174345

► Turbochargers are becoming an essential device in internal combustion engines as they boost the intake air with more pressure in order to increase the… (more)

Subjects/Keywords: Turbocharger Radial Turbine Blade Nozzle

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APA (6^th Edition):

Mora, E. C. (2015). Variable Stator Nozzle Angle Control in a Turbocharger Inlet. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174345

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mora, Enrique Carrasco. “Variable Stator Nozzle Angle Control in a Turbocharger Inlet.” 2015. Thesis, KTH. Accessed March 03, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174345.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mora, Enrique Carrasco. “Variable Stator Nozzle Angle Control in a Turbocharger Inlet.” 2015. Web. 03 Mar 2021.

Vancouver:

Mora EC. Variable Stator Nozzle Angle Control in a Turbocharger Inlet. [Internet] [Thesis]. KTH; 2015. [cited 2021 Mar 03]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174345.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mora EC. Variable Stator Nozzle Angle Control in a Turbocharger Inlet. [Thesis]. KTH; 2015. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174345

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

7. Rodenburg, M.L. (author). Additional lifting days for single blade installation.

Degree: 2015, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:3e351ec2-927d-4785-bb26-ff098369a37f

►

Crane companies face difficulties when installing blades of wind turbines: the tall cranes required for installation have large sail areas and are unable to lift… (more)

Subjects/Keywords: wind turbine; crane; blade installation

11 more images…

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APA (6^th Edition):

Rodenburg, M. L. (. (2015). Additional lifting days for single blade installation. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:3e351ec2-927d-4785-bb26-ff098369a37f

Chicago Manual of Style (16^th Edition):

Rodenburg, M L (author). “Additional lifting days for single blade installation.” 2015. Masters Thesis, Delft University of Technology. Accessed March 03, 2021. http://resolver.tudelft.nl/uuid:3e351ec2-927d-4785-bb26-ff098369a37f.

MLA Handbook (7^th Edition):

Rodenburg, M L (author). “Additional lifting days for single blade installation.” 2015. Web. 03 Mar 2021.

Vancouver:

Rodenburg ML(. Additional lifting days for single blade installation. [Internet] [Masters thesis]. Delft University of Technology; 2015. [cited 2021 Mar 03]. Available from: http://resolver.tudelft.nl/uuid:3e351ec2-927d-4785-bb26-ff098369a37f.

Council of Science Editors:

Rodenburg ML(. Additional lifting days for single blade installation. [Masters Thesis]. Delft University of Technology; 2015. Available from: http://resolver.tudelft.nl/uuid:3e351ec2-927d-4785-bb26-ff098369a37f

Delft University of Technology

8. Velez Isaza, A. (author). Understanding the Mechanisms of Aero-Structural Optimization of a Wind Turbine Blade.

Degree: 2012, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:824b7de5-af42-45cb-b7ad-4bb55f7c49c0

►

The process of designing a wind turbine blade involves many disciplines and is of an iterative character, making it cumbersome and sometimes inefficient. In this… (more)

Subjects/Keywords: wind turbine blade; Windenergy

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Velez Isaza, A. (. (2012). Understanding the Mechanisms of Aero-Structural Optimization of a Wind Turbine Blade. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:824b7de5-af42-45cb-b7ad-4bb55f7c49c0

Chicago Manual of Style (16^th Edition):

Velez Isaza, A (author). “Understanding the Mechanisms of Aero-Structural Optimization of a Wind Turbine Blade.” 2012. Masters Thesis, Delft University of Technology. Accessed March 03, 2021. http://resolver.tudelft.nl/uuid:824b7de5-af42-45cb-b7ad-4bb55f7c49c0.

MLA Handbook (7^th Edition):

Velez Isaza, A (author). “Understanding the Mechanisms of Aero-Structural Optimization of a Wind Turbine Blade.” 2012. Web. 03 Mar 2021.

Vancouver:

Velez Isaza A(. Understanding the Mechanisms of Aero-Structural Optimization of a Wind Turbine Blade. [Internet] [Masters thesis]. Delft University of Technology; 2012. [cited 2021 Mar 03]. Available from: http://resolver.tudelft.nl/uuid:824b7de5-af42-45cb-b7ad-4bb55f7c49c0.

Council of Science Editors:

Velez Isaza A(. Understanding the Mechanisms of Aero-Structural Optimization of a Wind Turbine Blade. [Masters Thesis]. Delft University of Technology; 2012. Available from: http://resolver.tudelft.nl/uuid:824b7de5-af42-45cb-b7ad-4bb55f7c49c0

University of Iceland

9. Guðmundur Birgir Halldórsson 1975-. Heimspeki í kvikmyndinni Blade Runner. Eru kvikmyndir heppilegt verkfæri til að leggja stund á heimspeki? .

Degree: 2011, University of Iceland

URL: http://hdl.handle.net/1946/8390

► Í þessari ritgerð ætla ég að taka fyrir kvikmyndina Blade Runner og skoða hana út frá heimspekilegu sjónarhorni. Kvikmyndin kom út árið 1982 í leikstjórn… (more)

Subjects/Keywords: Heimspeki; Blade runner (kvikmynd); Kvikmyndir

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APA (6^th Edition):

1975-, G. B. H. (2011). Heimspeki í kvikmyndinni Blade Runner. Eru kvikmyndir heppilegt verkfæri til að leggja stund á heimspeki? . (Thesis). University of Iceland. Retrieved from http://hdl.handle.net/1946/8390

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

1975-, Guðmundur Birgir Halldórsson. “Heimspeki í kvikmyndinni Blade Runner. Eru kvikmyndir heppilegt verkfæri til að leggja stund á heimspeki? .” 2011. Thesis, University of Iceland. Accessed March 03, 2021. http://hdl.handle.net/1946/8390.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

1975-, Guðmundur Birgir Halldórsson. “Heimspeki í kvikmyndinni Blade Runner. Eru kvikmyndir heppilegt verkfæri til að leggja stund á heimspeki? .” 2011. Web. 03 Mar 2021.

Vancouver:

1975- GBH. Heimspeki í kvikmyndinni Blade Runner. Eru kvikmyndir heppilegt verkfæri til að leggja stund á heimspeki? . [Internet] [Thesis]. University of Iceland; 2011. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1946/8390.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

1975- GBH. Heimspeki í kvikmyndinni Blade Runner. Eru kvikmyndir heppilegt verkfæri til að leggja stund á heimspeki? . [Thesis]. University of Iceland; 2011. Available from: http://hdl.handle.net/1946/8390

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

10. 柴田, 啓貴. Pressure of laryngoscope blade on anterior teeth during direct laryngoscopic examination : 喉頭展開における喉頭鏡ブレードと前歯接触部位の荷重に関する検討.

Degree: 博士（歯学）, 2016, Osaka Dental University / 大阪歯科大学

URL: http://id.nii.ac.jp/1392/00000013/

►

One possible complication of tracheal intubation is injury to the anterior teeth by the laryngoscope blade. We measured pressure where the anterior teeth contacted the… (more)

Subjects/Keywords: Pressure; Anterior teeth; Laryngoscope blade; Pressure; Anterior teeth; Laryngoscope blade

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APA (6^th Edition):

柴田, �. (2016). Pressure of laryngoscope blade on anterior teeth during direct laryngoscopic examination : 喉頭展開における喉頭鏡ブレードと前歯接触部位の荷重に関する検討. (Thesis). Osaka Dental University / 大阪歯科大学. Retrieved from http://id.nii.ac.jp/1392/00000013/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

柴田, 啓貴. “Pressure of laryngoscope blade on anterior teeth during direct laryngoscopic examination : 喉頭展開における喉頭鏡ブレードと前歯接触部位の荷重に関する検討.” 2016. Thesis, Osaka Dental University / 大阪歯科大学. Accessed March 03, 2021. http://id.nii.ac.jp/1392/00000013/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

柴田, 啓貴. “Pressure of laryngoscope blade on anterior teeth during direct laryngoscopic examination : 喉頭展開における喉頭鏡ブレードと前歯接触部位の荷重に関する検討.” 2016. Web. 03 Mar 2021.

Vancouver:

柴田 �. Pressure of laryngoscope blade on anterior teeth during direct laryngoscopic examination : 喉頭展開における喉頭鏡ブレードと前歯接触部位の荷重に関する検討. [Internet] [Thesis]. Osaka Dental University / 大阪歯科大学; 2016. [cited 2021 Mar 03]. Available from: http://id.nii.ac.jp/1392/00000013/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

柴田 �. Pressure of laryngoscope blade on anterior teeth during direct laryngoscopic examination : 喉頭展開における喉頭鏡ブレードと前歯接触部位の荷重に関する検討. [Thesis]. Osaka Dental University / 大阪歯科大学; 2016. Available from: http://id.nii.ac.jp/1392/00000013/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech

11. Wu, Daniel. The Effect of Blade Aeroelasticity and Turbine Parameters on Wind Turbine Noise.

Degree: MS, Mechanical Engineering, 2017, Virginia Tech

URL: http://hdl.handle.net/10919/78714

► In recent years, the demand for wind energy has dramatically increased as well as the number and size of commercial wind turbines. These large turbines… (more)

▼ In recent years, the demand for wind energy has dramatically increased as well as the number and size of commercial wind turbines. These large turbines are loud and can cause annoyance to nearby communities. Therefore, the prediction of large wind turbine noise over long distances is critical. The wind turbine noise prediction is a very complex problem since it has to account for atmospheric conditions (wind and temperature), ground absorption, un-even terrain, turbine wake, and blade deformation. In these large turbines, the blade deflection is significant and it can potentially influence the noise emissions. However, the effects of blade flexibility on turbine noise predictions have not been addressed yet, i.e. all previous research efforts have assumed rigid blades. To address this shortcoming, the present work merges a wind turbine aeroelastic code, FAST (Fatigue, Aerodynamics, Structures, and Turbulence) to a wind turbine noise code, WTNoise, to compute turbine noise accounting for blade aeroelasticity. Using the newly developed simulation tool, the effects flexible blades on wind turbine noise are investigated, as well as the effects of turbine parameters, e.g. wind conditions, rotor size, tilt, yaw, and pre-cone angles. The acoustic results are shown as long term average overall sound power level distribution over the rotor, ground noise map over a large flat terrain, and noise spectrum at selected locations downwind. To this end, two large wind turbines are modeled. The first one is the NREL 5MW turbine that has a rotor diameter of 126 m. The second wind turbine, the Sandia 13.2MW, has a rotor diameter of 206 m. The results show that the wind condition has strong effects on the noise propagation over long distances, primarily in the upwind direction. In general, the turbine parameters have no significant effects on the average noise level. However, the turbine yaw impacts significantly the turbine noise footprint by affecting the noise propagation paths. The rotor size is also a dominating factor in the turbine noise level. Finally, the blade aeroelasticity has minor effects on the turbine noise. In summary, a comprehensive tool for wind turbine noise prediction including blade aeroelasticity was developed and it was used to address its impact on modern large turbine noise emissions. Advisors/Committee Members: Burdisso, Ricardo A. (committeechair), Tarazaga, Pablo Alberto (committee member), Sandu, Corina (committee member).

Subjects/Keywords: wind turbine noise; aeroelastic blade; flexible blade; outdoor sound propagation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wu, D. (2017). The Effect of Blade Aeroelasticity and Turbine Parameters on Wind Turbine Noise. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/78714

Chicago Manual of Style (16^th Edition):

Wu, Daniel. “The Effect of Blade Aeroelasticity and Turbine Parameters on Wind Turbine Noise.” 2017. Masters Thesis, Virginia Tech. Accessed March 03, 2021. http://hdl.handle.net/10919/78714.

MLA Handbook (7^th Edition):

Wu, Daniel. “The Effect of Blade Aeroelasticity and Turbine Parameters on Wind Turbine Noise.” 2017. Web. 03 Mar 2021.

Vancouver:

Wu D. The Effect of Blade Aeroelasticity and Turbine Parameters on Wind Turbine Noise. [Internet] [Masters thesis]. Virginia Tech; 2017. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/10919/78714.

Council of Science Editors:

Wu D. The Effect of Blade Aeroelasticity and Turbine Parameters on Wind Turbine Noise. [Masters Thesis]. Virginia Tech; 2017. Available from: http://hdl.handle.net/10919/78714

Texas A&M University

12. Narzary, Diganta P. Experimental Study of Gas Turbine Blade Film Cooling and Heat Transfer.

Degree: PhD, Mechanical Engineering, 2010, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-7157

► Modern gas turbine engines require higher turbine-entry gas temperature to improve their thermal efficiency and thereby their performance. A major accompanying concern is the heat-up… (more)

▼ Modern gas turbine engines require higher turbine-entry gas temperature to improve their thermal efficiency and thereby their performance. A major accompanying concern is the heat-up of the turbine components which are already subject to high thermal and mechanical stresses. This heat-up can be reduced by: (i) applying thermal barrier coating (TBC) on the surface, and (ii) providing coolant to the surface by injecting secondary air discharged from the compressor. However, as the bleeding off of compressor discharge air exacts a penalty on engine performance, the cooling functions must be accomplished with the smallest possible secondary air injection. This necessitates a detailed and systematic study of the various flow and geometrical parameters that may have a bearing on the cooling pattern. In the present study, experiments were performed in three regions of a non-rotating gas turbine blade cascade: blade platform, blade span, and blade tip. The blade platform and blade span studies were carried out on a high pressure turbine rotor blade cascade in medium flow conditions. Film-cooling effectiveness or degree of cooling was assessed in terms of cooling hole geometry, blowing ratio, freestream turbulence, coolant-to-mainstream density ratio, purge flow rate, upstream vortex for blade platform cooling and blowing ratio, and upstream vortex for blade span cooling. The blade tip study was performed in a blow-down flow loop in a transonic flow environment. The degree of cooling was assessed in terms of blowing ratio and tip clearance. Limited heat transfer coefficient measurements were also carried out. Mainstream pressure loss was also measured for blade platform and blade tip film-cooling with the help of pitot-static probes. The pressure sensitive paint (PSP) and temperature sensitive paint (TSP) techniques were used for measuring film-cooling effectiveness whereas for heat transfer coefficient measurement, temperature sensitive paint (TSP) technique was employed. Results indicated that the blade platform cooling requires a combination of upstream purge flow and downstream discrete film-cooling holes to cool the entire platform. The shaped cooling holes provided wider film coverage and higher film-cooling effectiveness than the cylindrical holes while also creating lesser mainstream pressure losses. Higher coolant-to-mainstream density ratio resulted in higher effectiveness levels from the cooling holes. On the blade span, at any given blowing ratio, the suction side showed better coolant coverage than the pressure side even though the former had two fewer rows of holes. Film-cooling effectiveness increased with blowing ratio on both sides of the blade. Whereas the pressure side effectiveness continued to increase with blowing ratio, the increase in suction side effectiveness slowed down at higher blowing ratios (M=0.9 and 1.2). Upstream wake had a detrimental effect on film coverage. 0% and 25% wake phase positions significantly decreased film-cooling effectiveness magnitude. Comparison between the compound shaped… Advisors/Committee Members: Han, Je-Chin (advisor), Lau, Sai C. (committee member), Morrison, Gerrald (committee member), Chen, Hamn-Ching (committee member).

Subjects/Keywords: Blade platform; Blade span; Blade tip; film-cooling effectiveness

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APA (6^th Edition):

Narzary, D. P. (2010). Experimental Study of Gas Turbine Blade Film Cooling and Heat Transfer. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-7157

Chicago Manual of Style (16^th Edition):

Narzary, Diganta P. “Experimental Study of Gas Turbine Blade Film Cooling and Heat Transfer.” 2010. Doctoral Dissertation, Texas A&M University. Accessed March 03, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-7157.

MLA Handbook (7^th Edition):

Narzary, Diganta P. “Experimental Study of Gas Turbine Blade Film Cooling and Heat Transfer.” 2010. Web. 03 Mar 2021.

Vancouver:

Narzary DP. Experimental Study of Gas Turbine Blade Film Cooling and Heat Transfer. [Internet] [Doctoral dissertation]. Texas A&M University; 2010. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-7157.

Council of Science Editors:

Narzary DP. Experimental Study of Gas Turbine Blade Film Cooling and Heat Transfer. [Doctoral Dissertation]. Texas A&M University; 2010. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-7157

Penn State University

13. Andichamy, Veerandra Chakkarava. STUDY OF MITIGATION OF TURBINE BLADE TIP LEAKAGE FLOWS USING TIP LEAKAGE INTERRUPTER.

Degree: 2017, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/14469vka5038

► The gap between the turbine rotor blade tip and turbine casing surface is essential to prevent rubbing of these two components. Due to presence of… (more)

▼ The gap between the turbine rotor blade tip and turbine casing surface is essential to prevent rubbing of these two components. Due to presence of this gap, the differential pressure across the blade tip drives fluid flow from pressure side to suction side of the blade tip. This fluid flow is called tip leakage flow and is an important sources of multidisciplinary problems. The aerodynamic losses due to tip leakage flows in a turbine blade accounts for about one third of the overall aerodynamic loss of a present day turbine stage. The tip leakage fluid in general do not go through a significant expansion and work generation process. The solid surfaces in the tip area encounter the fluid areas with the highest absolute total temperature existing in the rotor frame of reference. The tip leakage flows also increase the thermal stresses, induce further thermal oxidation on the blade tip surfaces and on the casing surface. In addition, they may cause significant structural problems and also induce unsteadiness in the turbine flow field. Hence understanding of these tip leakage flows and reducing them are of outmost importance for improving energy efficiency, lifetime and reliability of any future turbine design. The current study uses Tip Leakage Interrupters (TLI) to mitigate some of the adverse effects of the tip leakage flows and improve the efficiency of the turbine stage. The TLI introduced in this study has the ability to alter the tip region flows on the airfoil surfaces. They operate by inducing controlled vortical structures originating from strategically shaped/oriented multiple and sub-miniature vortex generators. The TLIs in this investigation were attached on the suction side of the rotating blade tip sections in the Axial Flow Turbine Research Facility (AFTRF). The AFTRF is a high-pressure, single- stage cold-flow turbine with a 29 bladed rotor at the Department of Aerospace Engineering in the Penn State University. Three different experimental studies were completed on the TLI in which three different parameters such as the mounting location of TLI on the airfoil tip region, the number of TLIs mounted on the blade and the specific orientation of TLI were varied. The influence of the TLI on the leakage flow system was experimentally observed and interpreted using turbine exit total pressure maps obtained with very high spatial resolution. The time accurate and phase-locked total pressure data from the downstream of the modified turbine blade was collected by a high-time-response total pressure probe using a (100 KHz) dynamic pressure sensor. High resolution total pressure maps in a just downstream location of the AFTRF rotor provided detailed scans of the turbine exit field for further interpretations of flow field physics resulting from tip region flows and TLI induced flow systems. The current span-wise measurement resolution is about one percent of the blade span of 123 mm. The system generates 6000 equally spaced measurement points along one revolution of the rotor at a selected span-wise position. A… Advisors/Committee Members: Cengiz Camci, Thesis Advisor/Co-Advisor.

Subjects/Keywords: Turbine blade tip; Tip leakage flows; leakage vortex; Leakage vortex mitigation; turbine blade tip design; blade tip modification

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Andichamy, V. C. (2017). STUDY OF MITIGATION OF TURBINE BLADE TIP LEAKAGE FLOWS USING TIP LEAKAGE INTERRUPTER. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/14469vka5038

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Andichamy, Veerandra Chakkarava. “STUDY OF MITIGATION OF TURBINE BLADE TIP LEAKAGE FLOWS USING TIP LEAKAGE INTERRUPTER.” 2017. Thesis, Penn State University. Accessed March 03, 2021. https://submit-etda.libraries.psu.edu/catalog/14469vka5038.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Andichamy, Veerandra Chakkarava. “STUDY OF MITIGATION OF TURBINE BLADE TIP LEAKAGE FLOWS USING TIP LEAKAGE INTERRUPTER.” 2017. Web. 03 Mar 2021.

Vancouver:

Andichamy VC. STUDY OF MITIGATION OF TURBINE BLADE TIP LEAKAGE FLOWS USING TIP LEAKAGE INTERRUPTER. [Internet] [Thesis]. Penn State University; 2017. [cited 2021 Mar 03]. Available from: https://submit-etda.libraries.psu.edu/catalog/14469vka5038.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Andichamy VC. STUDY OF MITIGATION OF TURBINE BLADE TIP LEAKAGE FLOWS USING TIP LEAKAGE INTERRUPTER. [Thesis]. Penn State University; 2017. Available from: https://submit-etda.libraries.psu.edu/catalog/14469vka5038

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Exeter

14. Williams, Thomas Joseph. Testing the Atlantic ice hypothesis : the blade manufacturing of Clovis, Solutrean and the broader technological aspects of production in the Upper Palaeolithic.

Degree: PhD, 2014, University of Exeter

URL: http://hdl.handle.net/10871/16685

► The origins of Clovis technology and the nature and timing of the first populations to reach the Western Hemisphere is one of the most contentious… (more)

Subjects/Keywords: 930; Blade technology; Atlantic Ice Hypothesis; Clovis blade manufacturing; Solutrean blade manufacturing; Clovis; Solutrean; Clovis-Solutrean hypothesis; LGM

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Williams, T. J. (2014). Testing the Atlantic ice hypothesis : the blade manufacturing of Clovis, Solutrean and the broader technological aspects of production in the Upper Palaeolithic. (Doctoral Dissertation). University of Exeter. Retrieved from http://hdl.handle.net/10871/16685

Chicago Manual of Style (16^th Edition):

Williams, Thomas Joseph. “Testing the Atlantic ice hypothesis : the blade manufacturing of Clovis, Solutrean and the broader technological aspects of production in the Upper Palaeolithic.” 2014. Doctoral Dissertation, University of Exeter. Accessed March 03, 2021. http://hdl.handle.net/10871/16685.

MLA Handbook (7^th Edition):

Williams, Thomas Joseph. “Testing the Atlantic ice hypothesis : the blade manufacturing of Clovis, Solutrean and the broader technological aspects of production in the Upper Palaeolithic.” 2014. Web. 03 Mar 2021.

Vancouver:

Williams TJ. Testing the Atlantic ice hypothesis : the blade manufacturing of Clovis, Solutrean and the broader technological aspects of production in the Upper Palaeolithic. [Internet] [Doctoral dissertation]. University of Exeter; 2014. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/10871/16685.

Council of Science Editors:

Williams TJ. Testing the Atlantic ice hypothesis : the blade manufacturing of Clovis, Solutrean and the broader technological aspects of production in the Upper Palaeolithic. [Doctoral Dissertation]. University of Exeter; 2014. Available from: http://hdl.handle.net/10871/16685

Anna University

15. Selwin rajadurai J. Damage mechanism analysis in wind turbine blade;.

Degree: Damage mechanism analysis in wind turbine blade, 2014, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/27978

►

Wind powered ships grain mills water pumps and threshing newlinemachines all exemplify that extraction of power from wind is an ancient newlineendeavor With the evolution… (more)

Subjects/Keywords: Damage mechanism; mechanical engineering; wind turbine blade

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APA (6^th Edition):

J, S. r. (2014). Damage mechanism analysis in wind turbine blade;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/27978

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

J, Selwin rajadurai. “Damage mechanism analysis in wind turbine blade;.” 2014. Thesis, Anna University. Accessed March 03, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/27978.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

J, Selwin rajadurai. “Damage mechanism analysis in wind turbine blade;.” 2014. Web. 03 Mar 2021.

Vancouver:

J Sr. Damage mechanism analysis in wind turbine blade;. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Mar 03]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/27978.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

J Sr. Damage mechanism analysis in wind turbine blade;. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/27978

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

16. Rice, Tyler Grant. Numerical Analysis of the Film Cooling Effectiveness on a Highly Loaded Low Pressure Turbine Blade in Conjunction with Endwall Effects.

Degree: MS, Mechanical Engineering, 2017, Texas A&M University

URL: http://hdl.handle.net/1969.1/161663

► This thesis is a numerical investigation of the flow development of film coolant injected from a turbine blade with considerations to the effects of the… (more)

▼ This thesis is a numerical investigation of the flow development of film coolant injected from a turbine blade with considerations to the effects of the passage vortex. By studying the film cooling effectiveness of a low pressure turbine blade subjected to film cooling parameters such as the compound angle injection, Density Ratio, and Blowing Ratio are varied to understand the impact that these parameters have on the passage vortex and film cooling effectiveness in the near endwall region where the passage vortex effects are most prominent. Film Cooling is important in this region as the passage vortex region of a blade is susceptible to high heat transfer and thermal stresses, which can greatly reduce the life cycle of a turbine blade. For this study, a special blade was designed that has a total of 605 holes distributed along 13 different rows on the blade surfaces. 6 rows cover the suction side, 6 other rows cover the pressure side and one last row feeds the leading edge. There are six coolant cavities inside the blade. Each cavity is connected to one row on either sides of the blade, except for the closest cavity to leading edge since it is connected to the leading edge row as well. By using ANSYS CFX, a RANS based solver as a computational platform, the study first compared to an experimental benchmark to understand the deficiencies of the numerical simulation, in that the velocity fluctuations were overpredicted in the boundary layer, thus effecting the prediction of mass, momentum, and energy transport. Secondly, in varying the different parameters the interaction of the film cooling vortices and passage vortex is studied. The development of the film cooling iii vortices with varying parameters and the effects due to the passage vortex in the near endwall region is identified for each parameter. Ultimately, the passage vortex, displaced coolant away from the endwall at the same rate as the vorticity magnitude and size of the passage vortex is much larger than that produced from film cooling. Advisors/Committee Members: Schobeiri, Meinhard T (advisor), Anand, Nagamangala K (committee member), Strouboulis, Theofanis (committee member).

Subjects/Keywords: Turbine Blade; Film Cooling; Numerical Analysis

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Rice, T. G. (2017). Numerical Analysis of the Film Cooling Effectiveness on a Highly Loaded Low Pressure Turbine Blade in Conjunction with Endwall Effects. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/161663

Chicago Manual of Style (16^th Edition):

Rice, Tyler Grant. “Numerical Analysis of the Film Cooling Effectiveness on a Highly Loaded Low Pressure Turbine Blade in Conjunction with Endwall Effects.” 2017. Masters Thesis, Texas A&M University. Accessed March 03, 2021. http://hdl.handle.net/1969.1/161663.

MLA Handbook (7^th Edition):

Rice, Tyler Grant. “Numerical Analysis of the Film Cooling Effectiveness on a Highly Loaded Low Pressure Turbine Blade in Conjunction with Endwall Effects.” 2017. Web. 03 Mar 2021.

Vancouver:

Rice TG. Numerical Analysis of the Film Cooling Effectiveness on a Highly Loaded Low Pressure Turbine Blade in Conjunction with Endwall Effects. [Internet] [Masters thesis]. Texas A&M University; 2017. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1969.1/161663.

Council of Science Editors:

Rice TG. Numerical Analysis of the Film Cooling Effectiveness on a Highly Loaded Low Pressure Turbine Blade in Conjunction with Endwall Effects. [Masters Thesis]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/161663

Texas A&M University

17. Murray, Adam Riley. Palatability Effects of Blade Tenderization on Beef Top Sirloin Steaks.

Degree: MS, Animal Science, 2017, Texas A&M University

URL: http://hdl.handle.net/1969.1/169650

► The objective of this study was to determine if consumer satisfaction improves by blade tenderizing today’s more inherently tender beef. Paired USDA Choice top sirloin… (more)

Subjects/Keywords: beef tenderness; blade tenderization; top sirloin

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APA (6^th Edition):

Murray, A. R. (2017). Palatability Effects of Blade Tenderization on Beef Top Sirloin Steaks. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/169650

Chicago Manual of Style (16^th Edition):

Murray, Adam Riley. “Palatability Effects of Blade Tenderization on Beef Top Sirloin Steaks.” 2017. Masters Thesis, Texas A&M University. Accessed March 03, 2021. http://hdl.handle.net/1969.1/169650.

MLA Handbook (7^th Edition):

Murray, Adam Riley. “Palatability Effects of Blade Tenderization on Beef Top Sirloin Steaks.” 2017. Web. 03 Mar 2021.

Vancouver:

Murray AR. Palatability Effects of Blade Tenderization on Beef Top Sirloin Steaks. [Internet] [Masters thesis]. Texas A&M University; 2017. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1969.1/169650.

Council of Science Editors:

Murray AR. Palatability Effects of Blade Tenderization on Beef Top Sirloin Steaks. [Masters Thesis]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/169650

Penn State University

18. Halwick, Jason Michael. Implementation of Blade Element Theory in CFD Analysis of Edgewise Ducted Fan Vehicles.

Degree: 2012, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/15578

► Ducted fans have received renewed interest in recent years for a variety of potential missions including both civil and military STOVL applications. The design of… (more)

▼ Ducted fans have received renewed interest in recent years for a variety of potential missions including both civil and military STOVL applications. The design of these vehicles includes many challenges related to the influence of the ducts. Considered in this work, is a dual ducted fan vehicle in edgewise forward flight. This class of vehicle has been shown to exhibit significant separation over the ducts, causing distortion of the rotor inflow and performance. Current methods of modeling the flow field around these vehicles and their performance have proven to be lacking in regards to a design environment. High fidelity, unsteady solution methods are far too computationally and time expensive while simplified actuator disk models fail to incorporate the necessary physics of the shrouded rotor. To alleviate these problems, a computational method which couples a momentum source CFD code to a blade element theory rotor performance prediction code has been developed and validated. The coupled method was shown to have adequately resolved the dominate flow field phenomena in and around the ducts of the model, in particular the recirculatory, separation region over the front duct. Good agreement with experiment was found in the characteristics of both the inflow and outflow of the front fan in forward flight. The aerodynamic force predictions demonstrated the ability to adequately predict performance at low forward speeds and hover. At the highest advance ratio of 0.24, however, the prediction under-predicted lift by 30%.While, the coupled method was able to outperform the simplified momentum source approach and converge to a solution faster than a fully resolved rotor solution, improvements can be made. A more precise rotor model is required to improve the accuracy of the performance prediction. This is supported by the sensitivity of the coupled method solution to the lift and drag coefficients of the airfoil section used. A strong correlation was found between sectional lift data utilized by blade element theory and the resulting coupled method lift predictions. Advisors/Committee Members: Dennis K Mclaughlin, Thesis Advisor/Co-Advisor, Jules Washington Lindau V, Thesis Advisor/Co-Advisor.

Subjects/Keywords: Ducted Fan; CFD; Blade Element Theory; Aerodynamics

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APA (6^th Edition):

Halwick, J. M. (2012). Implementation of Blade Element Theory in CFD Analysis of Edgewise Ducted Fan Vehicles. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/15578

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Halwick, Jason Michael. “Implementation of Blade Element Theory in CFD Analysis of Edgewise Ducted Fan Vehicles.” 2012. Thesis, Penn State University. Accessed March 03, 2021. https://submit-etda.libraries.psu.edu/catalog/15578.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Halwick, Jason Michael. “Implementation of Blade Element Theory in CFD Analysis of Edgewise Ducted Fan Vehicles.” 2012. Web. 03 Mar 2021.

Vancouver:

Halwick JM. Implementation of Blade Element Theory in CFD Analysis of Edgewise Ducted Fan Vehicles. [Internet] [Thesis]. Penn State University; 2012. [cited 2021 Mar 03]. Available from: https://submit-etda.libraries.psu.edu/catalog/15578.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Halwick JM. Implementation of Blade Element Theory in CFD Analysis of Edgewise Ducted Fan Vehicles. [Thesis]. Penn State University; 2012. Available from: https://submit-etda.libraries.psu.edu/catalog/15578

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

19. Weber, Jamie. Passive Flow Control Method for Mitigation of Unsteady Load Excursions on a Wind Turbine Blade.

Degree: MS, Aerospace Engineering, 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/156350

► Stochastic flow conditions, such as large unsteady wind gusts and coherent structures in turbulent winds, cause detrimental blade loadings to horizontal axis wind turbines (HAWT).… (more)

▼ Stochastic flow conditions, such as large unsteady wind gusts and coherent structures in turbulent winds, cause detrimental blade loadings to horizontal axis wind turbines (HAWT). Such loadings lead to large blade root bending moments, increased blade fatigue damage, and inconsistent rotor torque and thrust. In the present work, robust, fast-response passive flow control (PFC) methods for mitigating adverse effects from unsteady aerodynamic loadings on a HAWT blade due were developed. The PFC methods examined were that of a leading-edge slot and a novel combination of two passive flow control devices, namely a leading-edge slot and a passively oscillating surface located at the slot exit (slot-flap). Wind tunnel tests were conducted at a Reynolds number of 0.3 x 10⁶ and unsteady flow conditions were produced by an upstream disturbance generator. The disturbance generator utilized shed vortices from a rapidly deflecting upstream airfoil to simulate high-frequency, impulse-like load excursions on the main airfoil, representative of large wind gusts and coherent structures in turbulent winds. Results from the test series demonstrated reduced maximum load excursions of 7 to 9% using the PFC methods as compared to clean airfoil tests. Effectiveness of the PFC methods decreased for loading with multiple vortex interactions. To further examine the influence of the slot-flap oscillations, two additional slot-flap configurations were examined: (1) increased rigidity and thickness and (2) reduced length. Both variations indicated a further reduction of transient load excursions from 8 to 12% as compared to a clean airfoil. Coefficient of momentum (c_mu) was calculated for each slot-flap configuration, which was on the order of 1% and varied with angle of attack. The reduced excitation frequency (F+) ranged from 0.96 to 1.23 based upon the slot-flap configuration. The three slot-flap variations showed comparable c_mu and F+ average values and were within the uncertainty limits, indicating that the improved mitigation from the slot-flap variations is not attributed to c_mu and F+ contributions. Based upon this study, the location and oscillation amplitude of the slot-flap configurations are significant parameters in the resulting mitigation effects. Advisors/Committee Members: Rediniotis, Othon K (advisor), White, Edward B (committee member), Holtzapple, Mark T (committee member).

Subjects/Keywords: unsteady aerodynamics; flow control; wind turbine blade

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APA (6^th Edition):

Weber, J. (2012). Passive Flow Control Method for Mitigation of Unsteady Load Excursions on a Wind Turbine Blade. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/156350

Chicago Manual of Style (16^th Edition):

Weber, Jamie. “Passive Flow Control Method for Mitigation of Unsteady Load Excursions on a Wind Turbine Blade.” 2012. Masters Thesis, Texas A&M University. Accessed March 03, 2021. http://hdl.handle.net/1969.1/156350.

MLA Handbook (7^th Edition):

Weber, Jamie. “Passive Flow Control Method for Mitigation of Unsteady Load Excursions on a Wind Turbine Blade.” 2012. Web. 03 Mar 2021.

Vancouver:

Weber J. Passive Flow Control Method for Mitigation of Unsteady Load Excursions on a Wind Turbine Blade. [Internet] [Masters thesis]. Texas A&M University; 2012. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1969.1/156350.

Council of Science Editors:

Weber J. Passive Flow Control Method for Mitigation of Unsteady Load Excursions on a Wind Turbine Blade. [Masters Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/156350

Penn State University

20. Malovrh, Brendon. Non-harmonic Root-pitch Individual-blade Control for the Reduction of Blade-vortex Interaction Noise in Rotorcraft.

Degree: 2012, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/15596

► One of the greatest obstacles to public acceptance of rotorcraft is the high levels of noise they produce, particularly in low-speed descent. In this flight… (more)

Subjects/Keywords: Blade-Vortex Interaction; BVI; noise; acoustic; helicopter

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APA (6^th Edition):

Malovrh, B. (2012). Non-harmonic Root-pitch Individual-blade Control for the Reduction of Blade-vortex Interaction Noise in Rotorcraft. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/15596

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Malovrh, Brendon. “Non-harmonic Root-pitch Individual-blade Control for the Reduction of Blade-vortex Interaction Noise in Rotorcraft.” 2012. Thesis, Penn State University. Accessed March 03, 2021. https://submit-etda.libraries.psu.edu/catalog/15596.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Malovrh, Brendon. “Non-harmonic Root-pitch Individual-blade Control for the Reduction of Blade-vortex Interaction Noise in Rotorcraft.” 2012. Web. 03 Mar 2021.

Vancouver:

Malovrh B. Non-harmonic Root-pitch Individual-blade Control for the Reduction of Blade-vortex Interaction Noise in Rotorcraft. [Internet] [Thesis]. Penn State University; 2012. [cited 2021 Mar 03]. Available from: https://submit-etda.libraries.psu.edu/catalog/15596.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Malovrh B. Non-harmonic Root-pitch Individual-blade Control for the Reduction of Blade-vortex Interaction Noise in Rotorcraft. [Thesis]. Penn State University; 2012. Available from: https://submit-etda.libraries.psu.edu/catalog/15596

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Addis Ababa University

21. Abiy, Alene. Design and Analysis of Bamboo and E-Glass Fiber Reinforced Epoxy Hybrid Composite for Wind Turbine Blade Shell .

Degree: 2013, Addis Ababa University

URL: http://etd.aau.edu.et/dspace/handle/123456789/4529

► The main goal of this study is to investigate the performance of bamboo and E-glass fiber reinforced epoxy hybrid composite (BGREC) with different unidirectional (UD)… (more)

Subjects/Keywords: Bamboo; E-glass; Epoxy; composite; Alkaline; blade

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APA (6^th Edition):

Abiy, A. (2013). Design and Analysis of Bamboo and E-Glass Fiber Reinforced Epoxy Hybrid Composite for Wind Turbine Blade Shell . (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/4529

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Abiy, Alene. “Design and Analysis of Bamboo and E-Glass Fiber Reinforced Epoxy Hybrid Composite for Wind Turbine Blade Shell .” 2013. Thesis, Addis Ababa University. Accessed March 03, 2021. http://etd.aau.edu.et/dspace/handle/123456789/4529.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Abiy, Alene. “Design and Analysis of Bamboo and E-Glass Fiber Reinforced Epoxy Hybrid Composite for Wind Turbine Blade Shell .” 2013. Web. 03 Mar 2021.

Vancouver:

Abiy A. Design and Analysis of Bamboo and E-Glass Fiber Reinforced Epoxy Hybrid Composite for Wind Turbine Blade Shell . [Internet] [Thesis]. Addis Ababa University; 2013. [cited 2021 Mar 03]. Available from: http://etd.aau.edu.et/dspace/handle/123456789/4529.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Abiy A. Design and Analysis of Bamboo and E-Glass Fiber Reinforced Epoxy Hybrid Composite for Wind Turbine Blade Shell . [Thesis]. Addis Ababa University; 2013. Available from: http://etd.aau.edu.et/dspace/handle/123456789/4529

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toronto

22. Ridley, Brayden. Impact Studies of Containment Ring during Blade Shed in Turbofan Engines.

Degree: 2018, University of Toronto

URL: http://hdl.handle.net/1807/91729

►

The catastrophic failure of fan blades in turbofan engines, referred to as fan blade-out (FBO), can cause severe damage to aircraft and result in fatal… (more)

Subjects/Keywords: Aircraft; Blade-Out; FBO; Turbofan; 0548

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APA (6^th Edition):

Ridley, B. (2018). Impact Studies of Containment Ring during Blade Shed in Turbofan Engines. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/91729

Chicago Manual of Style (16^th Edition):

Ridley, Brayden. “Impact Studies of Containment Ring during Blade Shed in Turbofan Engines.” 2018. Masters Thesis, University of Toronto. Accessed March 03, 2021. http://hdl.handle.net/1807/91729.

MLA Handbook (7^th Edition):

Ridley, Brayden. “Impact Studies of Containment Ring during Blade Shed in Turbofan Engines.” 2018. Web. 03 Mar 2021.

Vancouver:

Ridley B. Impact Studies of Containment Ring during Blade Shed in Turbofan Engines. [Internet] [Masters thesis]. University of Toronto; 2018. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1807/91729.

Council of Science Editors:

Ridley B. Impact Studies of Containment Ring during Blade Shed in Turbofan Engines. [Masters Thesis]. University of Toronto; 2018. Available from: http://hdl.handle.net/1807/91729

University of Manchester

23. Jiang, Zhengyi. Design, development and testing of an automated system for measuring wall thicknesses in turbine blades with cooling channels.

Degree: PhD, 2016, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/design-development-and-testing-of-an-automated-system-for-measuring-wall-thicknesses-in-turbine-blades-with-cooling-channels(895ac153-e310-40e2-87c6-4e40654c9d5d).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727920

► Cooling channels are designed in blades to protect the blades from damage at high temperature in a gas turbine. ELE Advanced Technology Ltd. is a… (more)

▼ Cooling channels are designed in blades to protect the blades from damage at high temperature in a gas turbine. ELE Advanced Technology Ltd. is a UK company specialised in machining cooling channels in turbine blades using electro-chemical techniques. The wall thicknesses between these cooling channels and the surface of the turbine blade influences the performance of cooling channels and are required to be accurately machined and then inspected. At present, the company measures the wall thicknesses using a hand-held contact ultrasonic probe, which is time-consuming and not very accurate. In this project, an inspection machine has been designed and built for the purpose of automating the procedure of measuring wall thicknesses in turbine blades. The inspection machine measures wall thicknesses based on immersion ultrasonic testing technique and the actuator is a six-axis industrial robot controlled by a computer. Control algorithms have been developed to automate the entire measuring process. Acquired ultrasonic data is also automatically processed using Matlab scripts for wall thickness evaluation. However, prior to the ultrasonic measurement, the probe path has to be calculated. Matlab script has been developed to automatically calculate a probe path using a point cloud of the blade digitized on a CMM as an input. The calculation of the probe path, in general, involves triangulation, parameterisation and B-spline surface approximation. Normal 3D triangulation methods were tested; nevertheless, the results were unsatisfactory. Therefore, a triangulation algorithm is developed based on B-spline curve and 2D Delaunay triangulation. After the probe path is calculated, a localisation method, based on iterative closest point algorithm, is implemented to transform the probe path from CMM to the inspection machine. Several experiments were designed and conducted to study the capability of the ultrasonic probe. Experimental results confirmed the feasibility of using an immersion ultrasonic probe for measuring the wall thicknesses; however, the experiments revealed several limitations of immersion ultrasonic testing, such as the angle of incidence of ultrasonic waves must be maintained within an angular deviation of ±1° from the surface normal to achieve accurate test results. Wall thicknesses of three turbine blades from one batch were measured on the inspection machine. A CT scan image was used as reference to compare the measured wall thicknesses with results obtained using contact probes. The comparison showed the wall thicknesses measured on the inspection machine were much more accurate than using contact probes.

Subjects/Keywords: 621.406; Ultrasonic testing; wall thickness; turbine blade

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APA (6^th Edition):

Jiang, Z. (2016). Design, development and testing of an automated system for measuring wall thicknesses in turbine blades with cooling channels. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/design-development-and-testing-of-an-automated-system-for-measuring-wall-thicknesses-in-turbine-blades-with-cooling-channels(895ac153-e310-40e2-87c6-4e40654c9d5d).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727920

Chicago Manual of Style (16^th Edition):

Jiang, Zhengyi. “Design, development and testing of an automated system for measuring wall thicknesses in turbine blades with cooling channels.” 2016. Doctoral Dissertation, University of Manchester. Accessed March 03, 2021. https://www.research.manchester.ac.uk/portal/en/theses/design-development-and-testing-of-an-automated-system-for-measuring-wall-thicknesses-in-turbine-blades-with-cooling-channels(895ac153-e310-40e2-87c6-4e40654c9d5d).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727920.

MLA Handbook (7^th Edition):

Jiang, Zhengyi. “Design, development and testing of an automated system for measuring wall thicknesses in turbine blades with cooling channels.” 2016. Web. 03 Mar 2021.

Vancouver:

Jiang Z. Design, development and testing of an automated system for measuring wall thicknesses in turbine blades with cooling channels. [Internet] [Doctoral dissertation]. University of Manchester; 2016. [cited 2021 Mar 03]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/design-development-and-testing-of-an-automated-system-for-measuring-wall-thicknesses-in-turbine-blades-with-cooling-channels(895ac153-e310-40e2-87c6-4e40654c9d5d).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727920.

Council of Science Editors:

Jiang Z. Design, development and testing of an automated system for measuring wall thicknesses in turbine blades with cooling channels. [Doctoral Dissertation]. University of Manchester; 2016. Available from: https://www.research.manchester.ac.uk/portal/en/theses/design-development-and-testing-of-an-automated-system-for-measuring-wall-thicknesses-in-turbine-blades-with-cooling-channels(895ac153-e310-40e2-87c6-4e40654c9d5d).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727920

24. Rahnama, Behzad. Reduction of Environmental Impact Effect of Disposing Wind Turbine Blades.

Degree: Energy and Environment, 2011, Gotland University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-217000

► Wind power industry is expected to be one of the fastest growing renewable energy sources inthe world. The growth specially focuses on growing industries… (more)

Subjects/Keywords: Wind turbine blade; Disposing methods; Environmental consideration

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APA (6^th Edition):

Rahnama, B. (2011). Reduction of Environmental Impact Effect of Disposing Wind Turbine Blades. (Thesis). Gotland University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-217000

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rahnama, Behzad. “Reduction of Environmental Impact Effect of Disposing Wind Turbine Blades.” 2011. Thesis, Gotland University. Accessed March 03, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-217000.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rahnama, Behzad. “Reduction of Environmental Impact Effect of Disposing Wind Turbine Blades.” 2011. Web. 03 Mar 2021.

Vancouver:

Rahnama B. Reduction of Environmental Impact Effect of Disposing Wind Turbine Blades. [Internet] [Thesis]. Gotland University; 2011. [cited 2021 Mar 03]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-217000.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rahnama B. Reduction of Environmental Impact Effect of Disposing Wind Turbine Blades. [Thesis]. Gotland University; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-217000

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

25. Roeleven, Niek (author). Optimal Design of Wind Turbine Blades with Bend-Twist Couplings Effects.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:3d712eb2-5d6f-4526-8f2c-becc2eeaa13f

► This thesis concerns the optimal design of wind turbine blades for bend twist coupling effects. Bend-twist coupling effects can prove to be an effective way… (more)

▼ This thesis concerns the optimal design of wind turbine blades for bend twist coupling effects. Bend-twist coupling effects can prove to be an effective way of reducing fatigue damage and root bending moments for a wind turbine blade. However, how can bend-twist coupling be incorporated into a wind turbine blade considering the many structural requirements? This thesis investigates the optimal design for bend-twist coupling in wind turbine blades. Gradient based numerical optimization algorithms are applied to obtain composite material layups favorable for bend twist coupling. The thesis work builds a framework that allows for the selection of fiber angles at several sections along the blade, while considering structural constraints. This involves the use of a cross section analysis software and a finite element beam formulation for the evaluation of responses, while an aeroelastic software is used for load mitigation validation. The structural constraints include tip twists and deflection, eigenfrequencies and material failure criteria of which the analytic sensitivities are calculated, implemented in the framework and validated against central finite difference gradient values. A simple cantilever sandwich beam is considered first as a trial for the framework and four problem formulations are defined to test both the framework and the considered optimization algorithms. A full scale wind turbine blade for a 10MW wind turbine is then subject for the optimization. A converged design for the full scale blade is obtained and subject to aeroelastic simulations in a steady state and turbulent inflow. From this, the load mitigation effects are observed and discussed. With the work done in this thesis project, a step closer to an effective framework for aeroelastic tailoring is achieved. Advisors/Committee Members: Holierhoek, Jessica (mentor), Langelaar, Matthijs (mentor), Stolpe, Mathias (mentor), Alderliesten, Rene (mentor), Lund, E. (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: Optimization; Wind Turbine Blade; Bend-twist coupling

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APA (6^th Edition):

Roeleven, N. (. (2018). Optimal Design of Wind Turbine Blades with Bend-Twist Couplings Effects. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:3d712eb2-5d6f-4526-8f2c-becc2eeaa13f

Chicago Manual of Style (16^th Edition):

Roeleven, Niek (author). “Optimal Design of Wind Turbine Blades with Bend-Twist Couplings Effects.” 2018. Masters Thesis, Delft University of Technology. Accessed March 03, 2021. http://resolver.tudelft.nl/uuid:3d712eb2-5d6f-4526-8f2c-becc2eeaa13f.

MLA Handbook (7^th Edition):

Roeleven, Niek (author). “Optimal Design of Wind Turbine Blades with Bend-Twist Couplings Effects.” 2018. Web. 03 Mar 2021.

Vancouver:

Roeleven N(. Optimal Design of Wind Turbine Blades with Bend-Twist Couplings Effects. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Mar 03]. Available from: http://resolver.tudelft.nl/uuid:3d712eb2-5d6f-4526-8f2c-becc2eeaa13f.

Council of Science Editors:

Roeleven N(. Optimal Design of Wind Turbine Blades with Bend-Twist Couplings Effects. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:3d712eb2-5d6f-4526-8f2c-becc2eeaa13f

University of Victoria

26. Lillo, Patricio. Static and fatigue analysis of wind turbine blades subject to cold weather conditions using finite element analysis.

Degree: Dept. of Mechanical Engineering, 2012, University of Victoria

URL: http://hdl.handle.net/1828/3829

► Canada has aggressive targets for introducing wind energy across the country, but also faces challenges in achieving these goals due to the harsh Canadian climate.… (more)

▼ Canada has aggressive targets for introducing wind energy across the country, but also faces challenges in achieving these goals due to the harsh Canadian climate. One issue which has received little attention in other countries not experiencing these extremes is the behaviour of composite blades in winter conditions. The scope of the work presented is to analyze the static stresses and fatigue response in cold climates using finite element models of the blade. The work opens with a quantification of the extremes of cold experienced in candidate Canadian wind turbine deployment locations. The thesis then narrows its focus to a consideration of the stresses in the root of the composite blades, specifically two common blade-hub connection methods: embedded root carrots and T-bolts. Finite element models of the root are proposed to properly simulate boundary conditions, applied loading and thermal stresses for a 1.5MW wind turbine. It is shown that the blade root is strongly affected by the thermal stresses caused by the mismatch and orthotrophy of the coefficients of thermal expansion of the blade root constituents. Fatigue analysis of a blade is then presented using temperature dependent material properties including estimated fatigue coefficients.It was found that the natural frequencies of a 1.5MW wind turbine blade are not significantly altered at cold temperatures. Additionally, cold temperatures slightly increase stresses in the composite blade skin when the blade is loaded, due to an increase in stiffness. Cold temperatures also lead to higher cyclic flapwise bending moments acting on the blade. However, this increase was found not to affect the lifetime fatigue damage. Finally, it was found that the cold climate as seen in Canada improves the fatigue strength of the saturated composite materials used in the blade. The predicted fatigue damage of the triaxial fabric and the spar cap layers in cold climates was therefore predicted to be half that of the fatigue damage at room temperature. This is caused solely by the temperature dependence of the fatigue coefficient b which requires further experimental verification to validate the numerical results of the current study. Advisors/Committee Members: Crawford, Curran (supervisor).

Subjects/Keywords: blade; composite; wind; energy; failure; fatigue

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APA (6^th Edition):

Lillo, P. (2012). Static and fatigue analysis of wind turbine blades subject to cold weather conditions using finite element analysis. (Masters Thesis). University of Victoria. Retrieved from http://hdl.handle.net/1828/3829

Chicago Manual of Style (16^th Edition):

Lillo, Patricio. “Static and fatigue analysis of wind turbine blades subject to cold weather conditions using finite element analysis.” 2012. Masters Thesis, University of Victoria. Accessed March 03, 2021. http://hdl.handle.net/1828/3829.

MLA Handbook (7^th Edition):

Lillo, Patricio. “Static and fatigue analysis of wind turbine blades subject to cold weather conditions using finite element analysis.” 2012. Web. 03 Mar 2021.

Vancouver:

Lillo P. Static and fatigue analysis of wind turbine blades subject to cold weather conditions using finite element analysis. [Internet] [Masters thesis]. University of Victoria; 2012. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1828/3829.

Council of Science Editors:

Lillo P. Static and fatigue analysis of wind turbine blades subject to cold weather conditions using finite element analysis. [Masters Thesis]. University of Victoria; 2012. Available from: http://hdl.handle.net/1828/3829

University of Arizona

27. Schucker, Thomas Douglas. Emitter Source Geolocation from Imparted Rotor Blade Modulation .

Degree: 2016, University of Arizona

URL: http://hdl.handle.net/10150/623262

► In RF communications with a rotorcraft such as a helicopter, the rotor blades can impart a modulation onto the received signal called Rotor Blade Modulation… (more)

Subjects/Keywords: Rotor Blade Modulation; RF Ray Tracing

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APA (6^th Edition):

Schucker, T. D. (2016). Emitter Source Geolocation from Imparted Rotor Blade Modulation . (Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/623262

Chicago Manual of Style (16^th Edition):

Schucker, Thomas Douglas. “Emitter Source Geolocation from Imparted Rotor Blade Modulation .” 2016. Masters Thesis, University of Arizona. Accessed March 03, 2021. http://hdl.handle.net/10150/623262.

MLA Handbook (7^th Edition):

Schucker, Thomas Douglas. “Emitter Source Geolocation from Imparted Rotor Blade Modulation .” 2016. Web. 03 Mar 2021.

Vancouver:

Schucker TD. Emitter Source Geolocation from Imparted Rotor Blade Modulation . [Internet] [Masters thesis]. University of Arizona; 2016. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/10150/623262.

Council of Science Editors:

Schucker TD. Emitter Source Geolocation from Imparted Rotor Blade Modulation . [Masters Thesis]. University of Arizona; 2016. Available from: http://hdl.handle.net/10150/623262

Louisiana State University

28. Foreman, Christopher. Characterization and verification of a closed loop wind tunnel with a linear cascade and upstream wake generator.

Degree: MSME, Mechanical Engineering, 2013, Louisiana State University

URL: etd-03212013-203144 ; https://digitalcommons.lsu.edu/gradschool_theses/2469

► A closed loop wind tunnel designed to study film cooling was completed in May 2011 along with a removable wake generating device. The test section… (more)

Subjects/Keywords: particle image velocimetry; pressure measurement blade

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APA (6^th Edition):

Foreman, C. (2013). Characterization and verification of a closed loop wind tunnel with a linear cascade and upstream wake generator. (Masters Thesis). Louisiana State University. Retrieved from etd-03212013-203144 ; https://digitalcommons.lsu.edu/gradschool_theses/2469

Chicago Manual of Style (16^th Edition):

Foreman, Christopher. “Characterization and verification of a closed loop wind tunnel with a linear cascade and upstream wake generator.” 2013. Masters Thesis, Louisiana State University. Accessed March 03, 2021. etd-03212013-203144 ; https://digitalcommons.lsu.edu/gradschool_theses/2469.

MLA Handbook (7^th Edition):

Foreman, Christopher. “Characterization and verification of a closed loop wind tunnel with a linear cascade and upstream wake generator.” 2013. Web. 03 Mar 2021.

Vancouver:

Foreman C. Characterization and verification of a closed loop wind tunnel with a linear cascade and upstream wake generator. [Internet] [Masters thesis]. Louisiana State University; 2013. [cited 2021 Mar 03]. Available from: etd-03212013-203144 ; https://digitalcommons.lsu.edu/gradschool_theses/2469.

Council of Science Editors:

Foreman C. Characterization and verification of a closed loop wind tunnel with a linear cascade and upstream wake generator. [Masters Thesis]. Louisiana State University; 2013. Available from: etd-03212013-203144 ; https://digitalcommons.lsu.edu/gradschool_theses/2469

Louisiana State University

29. Segura, Del Alan. Internal Cooling Using Novel Swirl Enhancement Strategies in A Slot Shaped Single Pass Channel.

Degree: PhD, Engineering Science and Materials, 2016, Louisiana State University

URL: etd-04112016-154606 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3703

► A series of heat transfer tests using a single pass slot shaped channel utilizing varying configurations of trapezoid shaped turbulence enhancement strip or varying configurations… (more)

Subjects/Keywords: Heat Transfer; Turbine Blade; Internal Cooling

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APA (6^th Edition):

Segura, D. A. (2016). Internal Cooling Using Novel Swirl Enhancement Strategies in A Slot Shaped Single Pass Channel. (Doctoral Dissertation). Louisiana State University. Retrieved from etd-04112016-154606 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3703

Chicago Manual of Style (16^th Edition):

Segura, Del Alan. “Internal Cooling Using Novel Swirl Enhancement Strategies in A Slot Shaped Single Pass Channel.” 2016. Doctoral Dissertation, Louisiana State University. Accessed March 03, 2021. etd-04112016-154606 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3703.

MLA Handbook (7^th Edition):

Segura, Del Alan. “Internal Cooling Using Novel Swirl Enhancement Strategies in A Slot Shaped Single Pass Channel.” 2016. Web. 03 Mar 2021.

Vancouver:

Segura DA. Internal Cooling Using Novel Swirl Enhancement Strategies in A Slot Shaped Single Pass Channel. [Internet] [Doctoral dissertation]. Louisiana State University; 2016. [cited 2021 Mar 03]. Available from: etd-04112016-154606 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3703.

Council of Science Editors:

Segura DA. Internal Cooling Using Novel Swirl Enhancement Strategies in A Slot Shaped Single Pass Channel. [Doctoral Dissertation]. Louisiana State University; 2016. Available from: etd-04112016-154606 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3703

30. Andersson, Anders. Konceptframtagning av matarenhet .

Degree: Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap, 2020, Chalmers University of Technology

URL: http://hdl.handle.net/20.500.12380/301139

► In this report, the work of improving a feeder unit will be covered. The unit is used in the manufacturing of saw blades where the… (more)

Subjects/Keywords: Saw blade; production; feeder unite; slide; mechanism

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Andersson, A. (2020). Konceptframtagning av matarenhet . (Thesis). Chalmers University of Technology. Retrieved from http://hdl.handle.net/20.500.12380/301139

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Andersson, Anders. “Konceptframtagning av matarenhet .” 2020. Thesis, Chalmers University of Technology. Accessed March 03, 2021. http://hdl.handle.net/20.500.12380/301139.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Andersson, Anders. “Konceptframtagning av matarenhet .” 2020. Web. 03 Mar 2021.

Vancouver:

Andersson A. Konceptframtagning av matarenhet . [Internet] [Thesis]. Chalmers University of Technology; 2020. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/20.500.12380/301139.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Andersson A. Konceptframtagning av matarenhet . [Thesis]. Chalmers University of Technology; 2020. Available from: http://hdl.handle.net/20.500.12380/301139

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations