It is shown that most of the existing versions of the Bhatnagar-Gross-Krook model-those whose coefficient are independent of the molecular velocity-do not satisfy the Onsager relations. This circumstance poses a problem when calibrating these models, making their transport properties match those of a specific fluid.
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Multispecies Bhatnagar-Gross-Krook models and the Onsager reciprocal relations.
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Department of Mathematics and Statistics, University of Limerick, Limerick V94 T9PX, Ireland.
It is shown that most of the existing versions of the Bhatnagar-Gross-Krook model-those whose coefficient are independent of the molecular velocity-do not satisfy the Onsager relations. This circumstance poses a problem when calibrating these models, making their transport properties match those of a specific fluid.
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Department of Computational Mathematics, Science and Engineering, Michigan State University, East Lansing, Michigan 48824, USA.
We have extended a recently developed multispecies, multitemperature Bhatnagar-Gross-Krook model [Haack et al., J. Stat.
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