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A numerical study of Mach 6 boundary layer stabilization by means of a porous surface

Sandham, N.D. and Lüdeke, H. (2009) A numerical study of Mach 6 boundary layer stabilization by means of a porous surface. 47th AIAA Aerospace Sciences Meeting , 5.-8. Jan 2009, Orlando, Florida.

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Abstract

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 one-dimensional models used in previous investigations based on linear stability theory. The simulations confirm the stabilizing effect of porosity. The effect is stronger in the simulations than in the corresponding theory. 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:Conference or Workshop Item (Paper)
Additional Information:Erschienen in: AIAA Journal Vol. 47, No. 9, September 2009
Title:A numerical study of Mach 6 boundary layer stabilization by means of a porous surface
Authors:
AuthorsInstitution or Email of Authors
Sandham, N.D.n.sandham@soton.ac.uk
Lüdeke, H.heinrich.luedeke@dlr.de
Date:January 2009
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Transition control, porous surface, hypersonic, direct numerical simulation
Event Title:47th AIAA Aerospace Sciences Meeting
Event Location:Orlando, Florida
Event Type:international Conference
Event Dates:5.-8. Jan 2009
Organizer:AIAA
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 13:34
Last Modified:15 Feb 2010 13:34

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