Sensitivity analysis and simulations of surface heating for hypersonic cavity flows

Hypersonic flow over cavities results in instabilities and discontinuities that affect the surface properties, and potentially results in surface damage. Simulations were performed using semi-structured 2D meshes in FUN3D with the Spalart-Allmaras and Menter Shear Stress Transport turbulence models at a freestream Mach number of 10. The geometry includes a flat plate and four cavities with length-to-height (L/H) ratios of 0.17, 5, 15, and 30. The surface heating is found to have a strong sensitivity to freestream Reynolds numbers and some sensitivity to a change in the wall temperature. The cavity flow results are compared to Nestler et al.’s experimental data and Holifield’s CFD results. The cavities with an L/H greater than 1 presented a good match to the experimental data for both heating and pressure. The flow did not fully develop at the bottom of the L/H 0.17 gap, resulting in less accurate results close to the cavity floor.

Grantor dc:publisher

University of Tennessee at Chattanooga

Author dc:creator

• Rice, Nina

Contributors dc:contributor

• Sreenivas, Kidambi
• Margraves, Charles; Newman, James
• College of Engineering and Computer Science

• Aerodynamics, Hypersonic
• Computational fluid dynamics
• Heat engineering
• Heat--Transmission
• Thermofluid systems

Licence

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

Language dc:language

English, eng

Repository record dc:identifier

https://scholar.utc.edu/theses/859

OAI identifier oai:identifier

oai:scholar.utc.edu:theses-2038