Jean-Philippe Brazier, Jean Perraud

DOI Number XXX-YYY-ZZZ

Conference Number HiSST-2022-292

Predicting the position of the laminar-turbulent transition in high-speed boundary-layer flows is
mandatory to estimate some key parameters such as the skin friction and the wall heat flux or the
efficiency of a control surface. Linear stability theory has been used for many years to describe the
amplification of small upstream fluctuations, which can be related to the transition position.
Computational tools are developed to address more complex flow stability problems at higher
velocities. However, some low-order models are still needed to give an estimation of transition
location in RANS computations, on smooth surfaces as well as for localized indentations such as steps
or gaps. Such models originally derived for low speed flows are progressively extended to higher
Mach numbers.

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In Categories: 1.Events, HiSST 2022, Hypersonic Fundamentals and History
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