- Autor(in)
- Referenz
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10 R. Zwanzig, Phys. Rev. 124 (1961) 983
11 R. E. Nettleton, J. Chem. Phys. 40 (1964) 112
12 R. E. Nettleton, Physica A 144 (1987) 219
13 R. E. Nettleton, Physica A 158 (1989) 672
14 R. E. Nettleton, J. Phys. Soc. Japan 61 (1992) 3103
1 H. Grad, Commun. Pure Appl. Math. 2 (1949) 331
2 C. Cattaneo, Atti Sem. Mat. Fis. Univ. Modena 3 (1948) 3
3 P. Vernotte, C.R. Acad. Sci. Paris 246 (1958) 3154
4 J. C. Maxwell, Phil. Trans. R. Soc. London 157 (1867) 49
5 D. Jou, J. Casas-Vázquez, G. Lebon, Repts. Progr. in Phys. 51 (1988) 1105
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8 R. E. Nettleton, S. Afr. J. Phys. 14 (1991) 27
9 R. E. Nettleton, J. Chem. Phys. 93 (1990) 8247
- Seitenbereich
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0490 - 0499
- Schlagwort(e)
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<KWD>Boltzmann equation
Extend thermodynamics
Grad ansatz
- Zusammenfsg.
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Grad-type approaches introduce an ansatz involving tensor Hermite functions with coefficients expresed in terms of moments of the ansatz. This formalism in usual form yields terms linear in first-order spatial derivatives in kinetic equations for the moments. Such terms disagree with alternative statistical derivations and phenomenological arguments. This disagreement is removed if different ansatzes are used to calculate entropy and moment equations. These are non-unique, and so Grad theory, while providing theoretical expressions for transport coefficients, does not serve uniquely to determine the structure of phenomenological equations.
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