摘要
This paper reports a study on the role of fluid flow pattern and dynamic pressure on the permeate flux through a micro filtration membrane in laboratory scale.For this purpose,a dead-end membrane cell equipped with a marine type impeller was used.The impeller was set to rotate in the clockwise and counter clockwise directions with the same angular velocities in order to illustrate the effect of rotation direction on permeate flux.Consequently, permeate fluxes were measured at various impeller rotational speeds.The computational fluid dynamics（CFD）predicted dynamic pressure was related to the fluxes obtained in the experiments.Using the CFD modeling,it is proven that the change in dynamic pressure upon the membrane surface has direct effect on the permeate flux.
这份报纸在实验室规模通过微过滤膜在 permeate 流动上在液体流动模式和动态压力的角色上报导研究。为这个目的，与海洋的类型 impeller 装备的一个尽头的膜房间被使用。impeller 被设置旋转在顺时针方向并且顺时针方向与一样的尖速度阻止方向以便说明旋转方向的效果在上渗入流动。因而，渗入流动在各种各样的 impeller 被测量旋转速度。计算液体动力学(CFD ) 预言动态压力与在实验获得的流动有关。用当模特儿的 CFD，在在膜表面之上的动态压力的变化在 permeate 流动上有直接效果，这被证明。
作者简介
To whom correspondence should be addressed. E-mail： masoudrahimi@yahoo.com
