Committee Chair

Ranjan, Reetesh

Committee Member

Sreenivas, Kidambi; Margraves, Charles; Elliott, Trevor

Department

Dept. of Mechanical Engineering

College

College of Engineering and Computer Science

Publisher

University of Tennessee at Chattanooga

Place of Publication

Chattanooga (Tenn.)

Abstract

The shock-wave turbulent boundary layer interaction (STBLI) is an important phenomenon in many practically relevant high-speed flow applications such as re-entry vehicles, air-breathing engines, rocket nozzles, etc. STBLI occurs in supersonic flow near solid surfaces where a shock wave is generated or reflected. The complex interaction is typically characterized by boundary layer thickening, shock-induced separation, thermo-mechanical loading, and low-frequency unsteadiness. In high-speed aerospace applications, the effects of STBLI can lead to catastrophic failure during flight. For this reason, the accurate prediction of STBLI is crucial for the design of such applications. Although previous investigations have led to an improved understanding of several key features of STBLI, there are many aspects of the interaction which are still not fully understood. The present study uses large-eddy simulations to investigate the effect of wall temperature on the key features of STBLI, namely, the shock-induced separation, mechanical loading, and low-frequency unsteady behavior.

Acknowledgments

I would like to extend my thanks to my thesis advisor, Dr. R. Ranjan, for his guidance and support during this work. I would also like to thank my thesis committee members, Dr. K. Sreenivas, Dr. C. Margraves, and Dr. T. Elliott for their continued support during my graduate program at UTC. I want to thank the members of the Fluids and Combustion Modeling Group for their assistance during this research work. I would like to acknowledge the Center of Excellence in Applied Computational Science and Engineering grant from UTC for funding part of this research work. I acknowledge the support of the staff at the UTC Research Institute for their assistance and access to the computational resources. Finally, I would like to thank Ms. A. James from the Department of Mechanical Engineering for the administrative support.

Degree

M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science.

Date

12-2023

Subject

Shock waves; Turbulent boundary layer

Keyword

wall temperature; STBLI; shock-wave; turbulent boundary layer; shock-induced separation; low-frequency unsteadiness

Document Type

Masters theses

DCMI Type

Text

Extent

xvi, 104 leaves

Language

English

Rights

http://rightsstatements.org/vocab/InC/1.0/

License

http://creativecommons.org/licenses/by/4.0/

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