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Название: The Chapman-Enskog and Kihara approximations for isotopic thermal diffusion in gases
Автор: Kihara T.
Kihara's first approximation for isotopic thermal diffusion in gases, which is a simplification of the Chapman-Enskog approximation, is derived in a simple and intuitive manner; the derivation elucidates the physical meaning of the approximation. The second approximation in this scheme is also given; it indicates the high accuracy of the first approximation.