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Optimized collision-specific parameters for binary mixtures of nitrogen, oxygen, argon, and helium

Physics of Fluids

Hong, Andrew Y.K.; Gallis, Michael A.

Recently proposed collision-specific parameters for direct simulation Monte Carlo simulations are tested for binary mixtures of nitrogen, oxygen, and argon. Near ambient conditions, the traditional collision-averaged parameters are highly accurate, whereas the collision-specific parameters are not. The simulated transport using the collision-averaged parameters for mixtures with helium, however, is found to be inaccurate. Hence, we propose a novel method to determine molecular parameters by combining the Chapman-Enskog theory with empirical mixing rules and experimental data. The optimized parameters are highly accurate for the binary mixtures of nitrogen, oxygen, and argon and greatly improve the simulated transport for the helium mixtures.

More Details
TYPE Journal Article YEAR 2023
DOIOSTIScopus
Results 4226–4250 of 101,000
Results 4226–4250 of 101,000
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