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Title:

Investigation of vortical structures in the wake of pseudo-random roughness surfaces in hypersonic reacting boundary-layer flows

Document type:
Zeitschriftenaufsatz
Author(s):
Ulrich, Friedrich; Stemmer, Christian
Abstract:
The influence of roughness on the laminar-turbulent transition of hypersonic flows is investigated with Direct Numerical Simulations (DNS) in a re-entry scenario of an Apollo-like space capsule. A Mach 20 flow regime is simulated for conditions at an altitude of km. This study uses two different generating shapes (sinusoidal and triangular shaped waves) for random distributed patches. Stronger streamwise vorticity is observed for most configurations with the triangular base functions. The simula...     »
Keywords:
Hypersonic flow; Laminar-turbulent transition; Re-entry vehicles; Cross-flow; Distributed roughness; Chemically reacting flow
Dewey Decimal Classification:
620 Ingenieurwissenschaften
Journal title:
International Journal of Heat and Fluid Flow
Year:
2022
Journal volume:
95
Pages contribution:
108945
Covered by:
Scopus
Language:
en
Fulltext / DOI:
doi:10.1016/j.ijheatfluidflow.2022.108945
Publisher:
Elsevier BV
E-ISSN:
0142-727X
Submitted:
15.06.2021
Accepted:
03.02.2022
Date of publication:
01.06.2022
TUM Institution:
Lehrstuhl für Aerodynamik und Strömungsmechanik
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