With discretized particle velocity space, a multiscale unified gas-kinetic scheme for entire Knudsen number flows is constructed based on the BGK model. The current scheme couples closely the update of macroscopic conservative variables with the update of microscopic gas distribution function within
Gas-kinetic scheme for rarefied flow simulation
โ Scribed by Kun Xu; Eswar Josyula
- Book ID
- 108200314
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 161 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0378-4754
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
This paper extends the gas-kinetic BGK-type scheme to low Mach number flows, and thus shows that incompressible flow solutions are accurately obtained from the BGK scheme in the low Mach number limit. The influence of boundary conditions, internal molecular degrees of freedom K , and the flow Mach n
Molecular-based numerical schemes, such as the direct simulation Monte Carlo (DSMC) method, are more physically appropriate for rarefied gas flows in microelectromechanical systems (MEMS). It is difficult for them to be statistically convergent, however, because the statistical fluctuation becomes i