Approximating Collisional Freestream Attenuation at Transitional Knudsen Numbers

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1997 English Publisher:American Institute of Aeronautics and Astronautics (AIAA)Journal:AIAA Journal, volume 35, pages 574-576 (issn: 0001-1452, eissn: 1533-385X,

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Authors: King, Lyon B.; Gallimore, Alec D.;

doi: 10.2514/2.138 , 10.2514/3.13546

Approximating Collisional Freestream Attenuation at Transitional Knudsen Numbers

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Abstract

When a body such as an instrument package is immersed in a rarefied flowfield, the result is a distortion of the freestream. This perturbation is a stumbling block for code developers seeking reliable experimental data for comparison with flowfield predictors. Of a special interest is the determination of the true freestream dynamic pressure for an exoatmospheric plume. This paper is devoted to this problem.

Related Organizations

University of Michigan–Ann Arbor
United States
University of Michigan–Flint
United States

Keywords

Rarefied gas flows, Boltzmann equation in fluid mechanics, distorsion of freestream, freestream dynamic pressure for exoatmospheric plume

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