Cylinder Drag in the Transition from Continuum to Free‐Molecule Flow
作者:
G. J. Maslach,
S. A. Schaaf,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1963)
卷期:
Volume 6,
issue 3
页码: 315-321
ISSN:0031-9171
年代: 1963
DOI:10.1063/1.1706736
出版商: AIP
数据来源: AIP
摘要:
The drag coefficients for cylinders normal to the flow have been determined experimentally at Mach ∼2, Mach ∼4, and Mach ∼6 with Knudsen numbers extending from continuum conditions to free‐molecule‐flow conditions. The results indicate a smooth transition from inviscid values at low Knudsen numbers to free‐molecule‐flow predictions for diffuse reflection at high Knudsen number. Small departure theories which are applicable to the ``near free molecule flow'' regime are compared to the experimental data.
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