Direct Numerical Simulations of a Hypersonic Flow on a Cold-Wall Compression Corner with Controlled Surface Roughness

G. Chiapparino, C. Stemmer

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

1 Scopus citations

Abstract

Direct Numerical Simulations are performed in order to investigate the physics of a hypersonic flow on different configurations of a compression corner, a typical ramp geometry characterising control surfaces of re-entry vehicles. The numerical experiments, carried out considering both an adiabatic and a cold-wall condition, include the presence of a sinusoidal roughness patch placed at various locations upstream of the ramp. The roughness elements placed upstream of the smooth separation point stretch the recirculation bubble towards the roughness position and affect the heat-flux peaks at the wall. Under conditions of a low enough wall temperature, instead, the placement of the roughness patch just in front of the corner can significantly limit the growth of the recirculation bubble.

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
  • cold-wall
  • compression ramp
  • roughness

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