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метеостанция
 

Dynamic correction to moment approximations.

Gorban A. N., Karlin I. V., Dukek G., Nonnenmacher T. F.
Physical Review E, February 1998 Volume 57, Number 2, P.1668–1672.

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Full text of the article [pdf, 45 Kb, in english]

Abstract

Considering the Grad moment ansatz as a suitable first approximation to a closed finite-moment dynamics, the correction is derived from the Boltzmann equation. The correction consists of two parts, local and nonlocal. Locally corrected thirteen-moment equations are demonstrated to contain exact transport coefficients. Equations resulting from the nonlocal correction give a microscopic justification to some phenomenological theories of extended hydrodynamics