Abstract
Isothermal gas flows in microchannels is studied using the lattice Boltzmann method. A novel equation relating Knudsen number with relaxation time is derived. The slip-velocity on the solid boundaries is reasonably realized by combining the bounce-back reflection with specular reflection in a certain proportion. Predicted characteristics in a two-dimensional microchannel flow, including slip-velocity, nonlinear pressure drop, friction factors, velocity distribution along the streamwise direction and mass flow rate, are compared with available analytical and experimental results and good agreement is achieved.
| Original language | English |
|---|---|
| Pages (from-to) | 335-347 |
| Number of pages | 13 |
| Journal | International Journal of Modern Physics C |
| Volume | 15 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 2004 |
Keywords
- Flow in microchannels
- Lattice Boltzmann method
- MEMS devices
- Slip boundary condition