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Numerical Study of Mach 6 Boundary Layer Stabilization by Means of a Porous Surface

Sandham, N.D. and Lüdeke, H. (2009) Numerical Study of Mach 6 Boundary Layer Stabilization by Means of a Porous Surface. AIAA Journal, Vol. 4 (9), pp. 2243-2252.

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Direct numerical simulations are carried out of boundary layer flow at Mach 6 over a porous surface, in which a Mack mode of instability is excited. The pores are resolved rather than modelled, allowing an evaluation to be made of the accuracy of simplified analytical models used in previous investigations based on linear stability theory. It is shown that the stabilizing effect of porosity is stronger in the simulations than in the corresponding theory for both two- and three-dimensional pores. From comparisons of spanwise grooves, streamwise slots and square pores it appears that the detailed surface structure is not as important as the overall porosity and the hydraulic diameter is able to collapse the results for different pore shapes to good accuracy. When the porous surface consists of fewer larger pores, the flow is noisier, with sound waves generated at the pore edges.

Document Type:Article
Title:Numerical Study of Mach 6 Boundary Layer Stabilization by Means of a Porous Surface
AuthorsInstitution or Email of Authors
Sandham, N.D.n.sandham@soton.ac.uk
Lüdeke, H.heinrich.luedeke@dlr.de
Date:September 2009
Journal or Publication Title:AIAA Journal
Refereed publication:Yes
In Open Access:No
In ISI Web of Science:Yes
Volume:Vol. 4
Page Range:pp. 2243-2252
Keywords:Transition control, porous surface, hypersonic, direct numerical simulation
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):W - Projekt IMENS-3C (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Dr.-Ing. Heinrich Lüdeke
Deposited On:15 Feb 2010 13:36
Last Modified:26 Mar 2015 09:15

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