Modeling and evaluation of the flow regime effects on fluid movement into three-dimensional channel with porous wall

In the present work a three-dimensional simulation of the slip flow regime for a small-sized channel of a fuel cell with lower porous wall. This study is used to determine the variations of average velocity, pressure difference, and friction coefficient considering the penetrated mass from porous wall, the wall and channel cross-sectional area, and aspect ratio of channel. Furtermore, the results are comprised with Continuous flow regime. In this solution, the equations of mass and momentum for continuous and slip regimes evaluated with developed Fortran code, and Validated with papers.The results with different channel area for two fluid regimes are obtained. Considering the aspect ratio equal to one, the friction coefficient average velocity, and the pressure difference are increased with decreasing at Knudsen number. Considering the slip regime into the channel, the friction coefficient, pressure difference and average velocity values are calculated more accurate (at best 5%), than non-slip regimes. Furthermore, when Knudsen number and aspect ratio are respectively equal to 0.001 and 5, changing the flow assumption from non-slip regime to slip one is occurred to increasing the expected pressure difference and average velocity.