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
1281-1290
Wartemann, Viola
18ed4363-7732-485b-a08f-3d657da70bc9
Ludeke, Heinrich
9cfef370-e77d-46a3-940d-89285151bfc5
Sandham, Neil D.
0024d8cd-c788-4811-a470-57934fbdcf97
June 2012
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), .
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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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
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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
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