Discrete unified gas kinetic scheme for all Knudsen number flows: Low-speed isothermal case
Discrete unified gas kinetic scheme for all Knudsen number flows: Low-speed isothermal case
Based on the Boltzmann-BGK (Bhatnagar-Gross-Krook) equation, in this paper a discrete unified gas kinetic scheme (DUGKS) is developed for low-speed isothermal flows. The DUGKS is a finite-volume scheme with the discretization of particle velocity space. After the introduction of two auxiliary distribution functions with the inclusion of collision effect, the …