Numerical Investigation of Hypersonic Boundary-Layer Stabilization by Porous Surfaces
Wartemann, Viola and Lüdeke , Heinrich and Sandham, Neil D. (2012) Numerical Investigation of Hypersonic Boundary-Layer Stabilization by Porous Surfaces. AIAA Journal, Vol. 50 (6), . DOI: 10.2514/1.J051355. ISSN 0001-1452.
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Official URL: https://www.aiaa.org/IframeTwoColumn.aspx?id=5962
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.
|Title:||Numerical Investigation of Hypersonic Boundary-Layer Stabilization by Porous Surfaces|
|Journal or Publication Title:||AIAA Journal|
|In Open Access:||No|
|In ISI Web of Science:||Yes|
|Keywords:||hypersonic boundary layer, transition control, porous surfaces, DNS, linear stability theory, FLOWer|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W RP - Raumtransport|
|DLR - Research area:||Space|
|DLR - Program:||W RP - Raumtransport|
|DLR - Research theme (Project):||W - Projekt IMENS-3C|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Spacecraft|
|Deposited By:||Viola Wartemann|
|Deposited On:||08 Aug 2012 16:21|
|Last Modified:||04 Apr 2013 16:20|
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