Simulation of gas flows in rough Micro- and Nano-channels by Lattice Boltzmann method

In this article, the characteristics of gas flow through rough Micro and Nano channels are simulated. Differentgas flow regimes with their criteria and governing equations are investigated. Among different gas flow regimes, slip andearly transition regimes in simple and backward-facing step Micro and Nano flow are studied. The slip velocity, pressuredrop, and mass flow rate are compared with previous numerical results. Then, we studied the effect of roughness on flowFeatures.

کلیدواژه ها:

Lattice Boltzmann ، roughness ، Knudsen number ، Micro channels ، Nano channels