Legge, H. (1992) Heat Transfer and Forces on a LiF Single-Crystal Disc in Hypersonic Flow. DLR-Interner Bericht. 222 - 92 A 14, 119 S.
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The heat transfer, recovery temperature, pressure force and shear force were measured on LiF single-crystal discs at 300 K - 800 K and 60^o to 90^o angle of attack in a helium free jet wind tunnel. The smallest energy accommodation coefficient determined in free molecular flow was sigma E = 0,15, which reduced the heat transfer significantly also in the transition regime. The recovery temperature was larger than expected for complete accommodation. The sacttering distribution of a helium molecular beam on the crystals in UHV was measured after the wind tunnel tests and showed that the surface quality was good.
|Document Type:||Monograph (DLR-Interner Bericht)|
|Title:||Heat Transfer and Forces on a LiF Single-Crystal Disc in Hypersonic Flow|
|Number of Pages:||119|
|Keywords:||Hypersonic flow, LiF single-crystal disc, heat transfer, recovery temperature|
|HGF - Research field:||UNSPECIFIED|
|HGF - Program:||other|
|HGF - Program Themes:||other|
|DLR - Research area:||UNSPECIFIED|
|DLR - Program:||no assignment|
|DLR - Research theme (Project):||UNSPECIFIED|
|Location:||Köln-Porz , Braunschweig , Göttingen|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik > Institut für Experimentelle Strömungsmechanik|
|Deposited By:||elib DLR-Beauftragter|
|Deposited On:||03 Apr 2006|
|Last Modified:||27 Apr 2009 10:07|
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