Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

You searched for id:"oai:etd.ohiolink.edu:wright1536311445147862". One record found.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters


Wright State University

1. McGillivray, Nathan T. Coupling Computational Fluid Dynamics Analysis and Optimization Techniques for Scramjet Engine Design.

Degree: MSME, Mechanical Engineering, 2018, Wright State University

Various aspects of hypersonic vehicles are being rapidly explored for improved functionality. One of the main areas of consideration is the fueling of a Supersonic Combusting Ramjet (scramjet) engine. Using Computational Fluid Dynamics (CFD), computer simulations can be performed to analyze the flow physics of a scramjet. In this research, an optimization code, Dakota, is integrated with the CFD to optimize a set of parameters to maximum thrust. In this study, the fuel injection and combustion is replaced with heat sources. This simplification greatly reduces the computational requirements. Additionally, the 3D geometry is reduced to an axisymmetric 2D geometry because three dimension effects like mixing and combustion are not being modeled. With this simplified model, the optimization and CFD algorithm is executed to find the heat addition for maximum thrust. Different optimization methods have been explored to reduce computational times. A genetic algorithm was selected because of its robust abilities. Additionally, a sampling algorithm was selected because of its abilities to explore the whole design space. Furthermore, the sampling method enables additional studies, such as sensitivity studies, to be completed. In addition to optimization studies, calibration studies are performed to obtain the heat source values that correspond to a given experimental wall pressure distribution. Knowledge of the optimized heat distribution will assist in the optimization of fueling splits and injector locations for a more detailed combustion investigation in which similar optimization techniques can be applied. Advisors/Committee Members: Wolff, Mitch (Advisor).

Subjects/Keywords: Aerospace Engineering; Mechanical Engineering; CFD; optimization; scramjet; hypersonic; DAKOTA; optimization routine

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

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

APA (6th Edition):

McGillivray, N. T. (2018). Coupling Computational Fluid Dynamics Analysis and Optimization Techniques for Scramjet Engine Design. (Masters Thesis). Wright State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=wright1536311445147862

Chicago Manual of Style (16th Edition):

McGillivray, Nathan T. “Coupling Computational Fluid Dynamics Analysis and Optimization Techniques for Scramjet Engine Design.” 2018. Masters Thesis, Wright State University. Accessed November 13, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=wright1536311445147862.

MLA Handbook (7th Edition):

McGillivray, Nathan T. “Coupling Computational Fluid Dynamics Analysis and Optimization Techniques for Scramjet Engine Design.” 2018. Web. 13 Nov 2018.

Vancouver:

McGillivray NT. Coupling Computational Fluid Dynamics Analysis and Optimization Techniques for Scramjet Engine Design. [Internet] [Masters thesis]. Wright State University; 2018. [cited 2018 Nov 13]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=wright1536311445147862.

Council of Science Editors:

McGillivray NT. Coupling Computational Fluid Dynamics Analysis and Optimization Techniques for Scramjet Engine Design. [Masters Thesis]. Wright State University; 2018. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=wright1536311445147862

.