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You searched for subject:(soot characteristics). Showing records 1 – 3 of 3 total matches.

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University of Oklahoma

1. Abdihamzehkolaei, Alireza. Study of Carbon Particulates in Coflow Diffusion Vaporized Biodiesel, Diesel, and Blended Biodiesel/Diesel Air-Flames.

Degree: PhD, 2019, University of Oklahoma

Biodiesel, which is a biodegradable and renewable fuel, has been considered one of the best alternative fuels for diesel due to its chemical similarity. Compared to diesel, burning biodiesel will reduce various emissions such as particulate matter, unburned hydrocarbons, carbon monoxide, and carbon dioxide which are well-known harmful components for the environment and human health. Employment of biodiesel/diesel blends is very common as well, especially in compression-ignition (CI) engines, as allows to lessen the difficulties of using pure biodiesel and help reducing the final fuel price. Therefore, studying the impact of biodiesel on combustion emissions is of great interest and was the main motivation for the current study. Despite the established findings on biodiesel, still there is not a clear understanding of how particulate matter forms and oxidizes during the combustion of this renewable fuel. In this experimental study, a detailed evolution process of carbon particulate formation along the axial direction of various co-flow diffusion air flames is presented. The studied flames are formed by three popular biodiesels (canola methyl ester (CME), cotton methyl ester (COME), and soy methyl ester (SME)),2 diesel, and diesel/CME blending. Soot samples were collected directly from inside of the flame volume using the thermophoretic sampling technique which employs the temperature gradient to capture particles from specific flame positions. Transmission electron microscopy (TEM) follows the sample extraction to analyze and obtain the desired properties. The obtained evolution process provides information of particle size, liquid-like and droplet-like characteristics, fractal dimension, radius of gyration, number of primary particles per aggregates, and nanostructure of soot samples extracted from studied flames. A typical soot formation and oxidation behavior was detected inside all tested flames. However, unique structures resembling tar-like material with droplet-like characteristic were dominant inside the evaporated biodiesel and blended fuel flames. Physical properties of soot aggregates (such as fractal dimension (Df), degree of branching, aggregates skeleton and branching length) were calculated from their two-dimension projections (TEM images). Fractal analysis of TEM images aids in quantifying morphologic variations of fractal aggregates and correlating them to growth and evolution mechanism. Outside the soot inception region, distinct fractal-like morphologies were detected between biodiesel and diesel. The calculation resulted in lower Df values for aggregates generated by the tested biodiesels and blended mixtures compared to diesel indicating more open-structured soot aggregates for biodiesel and blending and more compact aggregates for diesel. However, since Df values cannot solely explain the considerable difference observed between soot clusters produced by various tested fuels, the branching and skeleton length have been employed to quantify distinguishable characteristics of soot aggregates. It… Advisors/Committee Members: Merchan-Merchan, Wilson (advisor), Crossley, Steven (committee member), Garg, Jivtesh (committee member), Liu, Yingtao (committee member).

Subjects/Keywords: soot characteristics; soot morphology and nanostructure; biodiesel impact on soot

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

APA (6th Edition):

Abdihamzehkolaei, A. (2019). Study of Carbon Particulates in Coflow Diffusion Vaporized Biodiesel, Diesel, and Blended Biodiesel/Diesel Air-Flames. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/321106

Chicago Manual of Style (16th Edition):

Abdihamzehkolaei, Alireza. “Study of Carbon Particulates in Coflow Diffusion Vaporized Biodiesel, Diesel, and Blended Biodiesel/Diesel Air-Flames.” 2019. Doctoral Dissertation, University of Oklahoma. Accessed April 14, 2021. http://hdl.handle.net/11244/321106.

MLA Handbook (7th Edition):

Abdihamzehkolaei, Alireza. “Study of Carbon Particulates in Coflow Diffusion Vaporized Biodiesel, Diesel, and Blended Biodiesel/Diesel Air-Flames.” 2019. Web. 14 Apr 2021.

Vancouver:

Abdihamzehkolaei A. Study of Carbon Particulates in Coflow Diffusion Vaporized Biodiesel, Diesel, and Blended Biodiesel/Diesel Air-Flames. [Internet] [Doctoral dissertation]. University of Oklahoma; 2019. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/11244/321106.

Council of Science Editors:

Abdihamzehkolaei A. Study of Carbon Particulates in Coflow Diffusion Vaporized Biodiesel, Diesel, and Blended Biodiesel/Diesel Air-Flames. [Doctoral Dissertation]. University of Oklahoma; 2019. Available from: http://hdl.handle.net/11244/321106


ETH Zürich

2. Wüthrich, Dario. Water-in-Fuel (n-Dodecane) Emulsions Including Low Water Contents: Spray, Combustion and Soot Characteristics Under Diesel Engine Relevant Conditions.

Degree: 2019, ETH Zürich

Subjects/Keywords: Water-in-fuel emulsion; Soot; Flame lift-off length; Spray characteristics; info:eu-repo/classification/ddc/620; Engineering & allied operations

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

APA (6th Edition):

Wüthrich, D. (2019). Water-in-Fuel (n-Dodecane) Emulsions Including Low Water Contents: Spray, Combustion and Soot Characteristics Under Diesel Engine Relevant Conditions. (Doctoral Dissertation). ETH Zürich. Retrieved from http://hdl.handle.net/20.500.11850/358924

Chicago Manual of Style (16th Edition):

Wüthrich, Dario. “Water-in-Fuel (n-Dodecane) Emulsions Including Low Water Contents: Spray, Combustion and Soot Characteristics Under Diesel Engine Relevant Conditions.” 2019. Doctoral Dissertation, ETH Zürich. Accessed April 14, 2021. http://hdl.handle.net/20.500.11850/358924.

MLA Handbook (7th Edition):

Wüthrich, Dario. “Water-in-Fuel (n-Dodecane) Emulsions Including Low Water Contents: Spray, Combustion and Soot Characteristics Under Diesel Engine Relevant Conditions.” 2019. Web. 14 Apr 2021.

Vancouver:

Wüthrich D. Water-in-Fuel (n-Dodecane) Emulsions Including Low Water Contents: Spray, Combustion and Soot Characteristics Under Diesel Engine Relevant Conditions. [Internet] [Doctoral dissertation]. ETH Zürich; 2019. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/20.500.11850/358924.

Council of Science Editors:

Wüthrich D. Water-in-Fuel (n-Dodecane) Emulsions Including Low Water Contents: Spray, Combustion and Soot Characteristics Under Diesel Engine Relevant Conditions. [Doctoral Dissertation]. ETH Zürich; 2019. Available from: http://hdl.handle.net/20.500.11850/358924

3. BALAJI MOHAN. Performance and Emission Optimization of CIDI Engine through various Fuel Injection Strategies.

Degree: 2015, National University of Singapore

Subjects/Keywords: Diesel engine; Fuel-air mixing; Spray characteristics; Spray model; Cavitation; Injection strtegies; NOx-soot trade-off

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

APA (6th Edition):

MOHAN, B. (2015). Performance and Emission Optimization of CIDI Engine through various Fuel Injection Strategies. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/119475

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

Chicago Manual of Style (16th Edition):

MOHAN, BALAJI. “Performance and Emission Optimization of CIDI Engine through various Fuel Injection Strategies.” 2015. Thesis, National University of Singapore. Accessed April 14, 2021. http://scholarbank.nus.edu.sg/handle/10635/119475.

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

MLA Handbook (7th Edition):

MOHAN, BALAJI. “Performance and Emission Optimization of CIDI Engine through various Fuel Injection Strategies.” 2015. Web. 14 Apr 2021.

Vancouver:

MOHAN B. Performance and Emission Optimization of CIDI Engine through various Fuel Injection Strategies. [Internet] [Thesis]. National University of Singapore; 2015. [cited 2021 Apr 14]. Available from: http://scholarbank.nus.edu.sg/handle/10635/119475.

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

Council of Science Editors:

MOHAN B. Performance and Emission Optimization of CIDI Engine through various Fuel Injection Strategies. [Thesis]. National University of Singapore; 2015. Available from: http://scholarbank.nus.edu.sg/handle/10635/119475

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

.