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Numerical investigation of hypersonic boundary-layer stabilization by porous surfaces

Numerical investigation of hypersonic boundary-layer stabilization by porous surfaces
Numerical investigation of hypersonic boundary-layer stabilization by porous surfaces
The acoustic second-mode instability predicted by linear stability theory is compared with direct numerical simulation for a hypersonic flow over various porous walls. The damping effect of the micropores on the second mode is shown by comparison of the two different approaches. In addition to investigating the effect of pore size, the influence of the pore shape is studied by using spanwise grooves and cylindrical pores. Specifically, the comparability of different pore shapes by two definitions of hydraulic diameter is analyzed. The influence of rarefied gas behavior of the flow inside the pores is also investigated by comparing a slip boundary condition with finite Knudsen numbers with a nonslip boundary condition for different radii and pore depths
0001-1452
1281-1290
Wartemann, Viola
18ed4363-7732-485b-a08f-3d657da70bc9
Ludeke, Heinrich
9cfef370-e77d-46a3-940d-89285151bfc5
Sandham, Neil D.
0024d8cd-c788-4811-a470-57934fbdcf97
Wartemann, Viola
18ed4363-7732-485b-a08f-3d657da70bc9
Ludeke, Heinrich
9cfef370-e77d-46a3-940d-89285151bfc5
Sandham, Neil D.
0024d8cd-c788-4811-a470-57934fbdcf97

Wartemann, Viola, Ludeke, Heinrich and Sandham, Neil D. (2012) Numerical investigation of hypersonic boundary-layer stabilization by porous surfaces. AIAA Journal, 50 (6), 1281-1290.

Record type: Article

Abstract

The acoustic second-mode instability predicted by linear stability theory is compared with direct numerical simulation for a hypersonic flow over various porous walls. The damping effect of the micropores on the second mode is shown by comparison of the two different approaches. In addition to investigating the effect of pore size, the influence of the pore shape is studied by using spanwise grooves and cylindrical pores. Specifically, the comparability of different pore shapes by two definitions of hydraulic diameter is analyzed. The influence of rarefied gas behavior of the flow inside the pores is also investigated by comparing a slip boundary condition with finite Knudsen numbers with a nonslip boundary condition for different radii and pore depths

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More information

Published date: June 2012
Organisations: Aerodynamics & Flight Mechanics Group

Identifiers

Local EPrints ID: 346450
URI: http://eprints.soton.ac.uk/id/eprint/346450
ISSN: 0001-1452
PURE UUID: 0b84bc0d-39a2-4c24-a100-e91044689fd8
ORCID for Neil D. Sandham: ORCID iD orcid.org/0000-0002-5107-0944

Catalogue record

Date deposited: 02 Jan 2013 12:02
Last modified: 15 Mar 2024 03:00

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Contributors

Author: Viola Wartemann
Author: Heinrich Ludeke
Author: Neil D. Sandham ORCID iD

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