Piecewise continuous partition function method in the theory of wave perturbations of inhomogeneous gas

D. A. Vereshchagin; S. B. Leble; M. A. Solovchuk

doi:10.1016/j.physleta.2005.08.054

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Piecewise continuous partition function method in the theory of wave perturbations of inhomogeneous gas

D. A. Vereshchagin·S. B. Leble·M. A. Solovchuk

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Abstract

The problem of wave disturbance propagation in rarefied gas in gravity field is explored. The system of hydrodynamic-type equations for a stratified gas in gravity field is derived from BGK equation by method of piecewise continuous partition function. The obtained system of the equations generalizes the Navier-Stokes at arbitrary density (Knudsen numbers). The verification of the model is made for a limiting case of a homogeneous medium. Results are in the good agreement with experiment and former theories at arbitrary Knudsen numbers.

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D. A. Vereshchagin, S. B. Leble, M. A. Solovchuk. 2004-11-29. Piecewise continuous partition function method in the theory of wave perturbations of inhomogeneous gas. https://doi.org/10.1016/j.physleta.2005.08.054

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