What is it about?
Prandtl number in a high speed flow varies as a function of temperature, pressure and composition of the gas. We study how this variation in Prandtl number can effect the stability of high Mach number flows.
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Why is it important?
We find that for a high Mach number boundary layer flow, increasing the momentum diffusivity compared to thermal diffusivity can significantly destabilize the flow.
Perspectives
This work shows that the effect of Prandtl number on laminar to turbulent flow transition can be completely different in a boundary layer flow compared to a wall-bounded flow.
bijaylakshmi saikia
Indian Institute of Technology Bombay
Read the Original
This page is a summary of: Linear stability of high-speed boundary layer flows at varying Prandtl numbers, June 2015, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2015-2320.
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