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On the Spectral Problems for the Discrete Boltzmann Models |
| Aq Kwang-Hua Chu;J. FANG Jing |
| Department of Mechanics and Engineering Science, Peking University, Beijing 100871 |
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| Cite this article: |
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Aq Kwang-Hua Chu, J. FANG Jing 2000 Chin. Phys. Lett. 17 159-161 |
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Abstract The discrete Boltzmann models are used to study the spectral problems related to the one-dimensional plane wave propagation in monatomic gases which are fundamental in the nonequilibrium statistical thermodynamics. The results show that the 8-velocity model can only describe the propagation of the diffusion mode (entropy wave) in the intermediate Knudsen number regime. The 4- and 6-velocity models, instead, can describe the propagation of sound modes quite well, after comparison with the continuum-mechanical results.
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| Keywords:
03.40.Kf
43.35.+d
47.45.-n
62.80.+f
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Published: 01 March 2000
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