Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


Thesis McGillivray.pdf (2.34 MB)

ETD Abstract Container

Abstract Header

Coupling Computational Fluid Dynamics Analysis and Optimization Techniques for Scramjet Engine Design

McGillivray, Nathan T.
http://rave.ohiolink.edu/etdc/view?acc_num=wright1536311445147862

Abstract Details

2018, Master of Science in Mechanical Engineering (MSME), Wright State University, Mechanical Engineering.
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.
Mitch Wolff, Ph.D. (Advisor)
Mark Hagenmaier, Ph.D. (Other)
Dean Eklund, Ph.D. (Committee Member)
Scott Thomas, Ph.D. (Committee Member)
76 p.
Aerospace Engineering; Mechanical Engineering
CFD; optimization; scramjet; hypersonic; DAKOTA; optimization routine

Recommended Citations

Citations

  • McGillivray, N. T. (2018). Coupling Computational Fluid Dynamics Analysis and Optimization Techniques for Scramjet Engine Design [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1536311445147862

    APA Style (7th edition)

  • McGillivray, Nathan. Coupling Computational Fluid Dynamics Analysis and Optimization Techniques for Scramjet Engine Design. 2018. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1536311445147862.

    MLA Style (8th edition)

  • McGillivray, Nathan. "Coupling Computational Fluid Dynamics Analysis and Optimization Techniques for Scramjet Engine Design." Master's thesis, Wright State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=wright1536311445147862

    Chicago Manual of Style (17th edition)

wright1536311445147862
756
© 2018, some rights reserved.Creative Commons License Coupling Computational Fluid Dynamics Analysis and Optimization Techniques for Scramjet Engine Design by Nathan T. McGillivray is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Wright State University and OhioLINK.