Woonghwi PARK, Eunji JUN

DOI Number: N/A

Conference number: HiSST-2024-305

In hypersonic flows, non-equilibrium flow characteristics are present. To accurately understand such flows, it is essential to obtain the velocity distribution function using a stochastic approach. In this study, the accuracy of the particle-based Bhatnagar-Gross-Krook (BGK) method in the analysis of the velocity distribution function is evaluated in comparison to the Direct Simulation Monte Carlo method. In particular, deviations from the Maxwellian distribution are identified in the velocity distribution function under non-equilibrium flow conditions, and differences in how different BGK models represent this are highlighted. As a result, the Shakhov BGK model is found to be more accurate in reproducing the velocity distribution function than the ellipsoidal-statistical BGK model.

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In Categories: 1.Events, High-Speed Aerodynamics and Aerothermodynamics, HiSST 2024
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