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Heat Transfer and Forces on a LiF Single-Crystal Disc in Hypersonic Flow

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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Abstract

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 &#61 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)
Additional Information: LIDO-Berichtsjahr=1992,
Title:Heat Transfer and Forces on a LiF Single-Crystal Disc in Hypersonic Flow
Authors:
AuthorsInstitution or Email of Authors
Legge, H.UNSPECIFIED
Date:1992
Number of Pages:119
Status:Published
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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