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

F. Ulrich, C. Stemmer

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The role of acoustic-perturbation in the laminar-turbulent transition of hypersonic flows is an important aspect of understanding the physical mechanisms of the transition process. This investigation uses Direct Numerical Simulations (DNS) in a re-entry scenario of an Apollo-like space capsule. Vortical structures in the wake of the roughness patch interact with an acoustic perturbation derived from local one-dimensional inviscid (LODI) relations. This study uses two different roughness structures and analyses the vortical structures in the wake. The simulation includes the ideal gas model and the chemical equilibrium.

Original languageEnglish
Title of host publication22nd Australasian Fluid Mechanics Conference, AFMC 2020
EditorsHubert Chanson, Richard Brown
PublisherAustralasian Fluid Mechanics Society
ISBN (Electronic)9781742723419
DOIs
StatePublished - 2020
Event22nd Australasian Fluid Mechanics Conference, AFMC 2020 - Brisbane, Australia
Duration: 7 Dec 202010 Dec 2020

Publication series

Name22nd Australasian Fluid Mechanics Conference, AFMC 2020

Conference

Conference22nd Australasian Fluid Mechanics Conference, AFMC 2020
Country/TerritoryAustralia
CityBrisbane
Period7/12/2010/12/20

Keywords

  • Hypersonic flow
  • laminar-turbulent transition
  • re-entry vehicles

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