中文摘要：

利用随机顺序添加算法（Random Sequential Addition，RSA）建立中空纤维膜组件壳程三维几何模型，研究膜组件壳程复杂结构条件下的流体力学特征，并进行了组件壳程流动的数值模拟．结果表明．高雷诺数有利于组件壳程传质．较低的封装分率下，组件壳程对流作用明显，有利于减少死区，充分利用膜接触面积．另一方面，增加封装分率有利于提高相际接触面积，但会降低对流在传质中的作用，并造成成本的提高和膜丝表面积的浪费．

英文摘要：

Random Sequential Addition （RSA） algorithm was utilized to develop a geometric model for hollow fiber membrane modules, which was further integrated into numerical simulation for shell-side flow study. The result shows that higher Reynolds number yields better shell-side mass-transfer. Under low packing density, convection is significant in shell-side flow, which is preferable for the reduction of dead zone area and the higher utilization of contacting area. On the other hand, increasing packing density results in higher ratio area for the contactor, but may reduce the significance of convection in mass-transfer, and rendering waste of membrane surface.