Abstract
The transport processes in the nonequilibrium outflow of a monatomic gas into a vacuum are investigated using direct numerical statistical simulation. The quantitative dependence of the macroscopic parameters, such as the density, velocity, temperature, stress, and heat flux, on the distance from the source is determined. In the case of a gasdynamic source the dependence of the stress and the heat flux on the strain rate tensor components and the temperature gradient is established. The applicability range of the well-known hypersonic approximation is determined.
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Kozlov, A.V. Transport Processes in Nonequilibrium Spherically-Symmetric Gas Outflow into a Vacuum. Fluid Dynamics 37, 463–472 (2002). https://doi.org/10.1023/A:1019623010564
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DOI: https://doi.org/10.1023/A:1019623010564