Relationship Between Dimension and Diffusion in Pressure Driven Micro-Channel Flows
Zhang Kai,Lin Jianzhong
(Department of Mechanics, Zhejiang University, Hangzhou, 310027)

Abstract: The fluid diffusion in the pressure driven micro-channel is simulated numerically. The results show that the effect of micro dimension makes the fluid diffusion tend to heterogeneous. In the cases with different dimensions, an expression of reflecting relationship among the flow cross section, flow distance and the region of diffusion is aquired to evaluatel flexibly the region of diff usion at arbitrary streamwise location in the micro-channels.
Keywords: micro-channel, diffusion, pressure driven, numerical simulation.