The current work investigated and analyzed the performance of conventional slip models among various regimes of Knudsen number, and developed a new slip velocity model, multi coefficient model, suitable especially to transition regime by using Taguchi quality control techniques and numerical analysis. In comparison with conventional slip models, the multi coefficient slip model has a better agreement with the solution obtained from the linearized Boltzmann equation and direct simulation of Monte Carlo method (DSMC) than the other models, especially in the regime of Knudsen number equal to or larger than one.
['E. Y. K. Ng', 'N. Liu', 'C. H. Ang']
A MULTI-COEFFICIENT SLIP MODEL FOR ULTRA-THIN GAS FILM LUBRICATION