NUMERICAL INVESTIGATION OF THE INFLUENCE OF AN IMPINGING SHOCK WAVE AND HEAT TRANSFER ON A DEVELOPING TURBULENT BOUNDARY LAYER

Abstract : As a prerequesite for relevant model development and improvement of design methodologies for supersonic vehicles, this study aims at investigating the influence of wall heat-transfer and shock interaction on the turbulence structure of supersonic boundary layers. The numerical strategy relies on the full resolution of threedimensional compressible Navier-Stokes equations by means of state-of-art high-order WENO and compact schemes. A fully-developped turbulent boundary layer is simulated by means of upstream wall perturbations triggering the transition in order to dispose of fully-reliable data upstream of the analysis region. Insipient separation conditions and two different wall thermal boundary conditions (adiabatic and cold) are considered. The analysis focuses on the evolution of mean and turbulent flow properties along the interaction region and in the relaxation region downstream of the shock-system. The strong influence of the mean pressure gradient is quantified through the analysis of mean flow profiles and boundary layer integral parameters. The anisotropic amplification of turbulent quantities through the interaction region is characterized and the turbulent events associated with the modification of the turbulence structure of the perturbed boundary layer are identified. The mean and turbulent thermal fields are shown to be strongly modified by the wall cooling which significantly dampens more particularly the turbulent thermal quantities levels across the boundary layer. In addition, a reduction of the upstream influence and separation lengths by the wall cooling are evidenced along with a faster recovery process downstream of the shock-system.
Document type :
Theses
Complete list of metadatas

Cited literature [153 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00665791
Contributor : Bénédicte Carouge <>
Submitted on : Thursday, February 2, 2012 - 4:59:33 PM
Last modification on : Thursday, February 14, 2019 - 11:32:05 AM
Long-term archiving on : Monday, November 19, 2012 - 3:41:01 PM

Identifiers

  • HAL Id : tel-00665791, version 1

Collections

Citation

Muhammad Farrukh Shahab. NUMERICAL INVESTIGATION OF THE INFLUENCE OF AN IMPINGING SHOCK WAVE AND HEAT TRANSFER ON A DEVELOPING TURBULENT BOUNDARY LAYER. Other. ISAE-ENSMA Ecole Nationale Supérieure de Mécanique et d'Aérotechique - Poitiers, 2011. English. ⟨tel-00665791⟩

Share

Metrics

Record views

313

Files downloads

660