发展压力修正法计算流体与颗粒交互作用问题(英文)
作者单位：国立成功大学航空太空系
会议名称：《2009年度海峡两岸工程力学研讨会》
会议日期：2009年
学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）]
关 键 词：immersed boundary method pressure correction method fluid-particle interaction direct forcing splitting projection operator sedimentation
摘 要：A direct-forcing pressure correction method is developed to simulate fluid-particle interaction *** method applies an implicit pressure correction method to solve the incompressible flow field and the immersed boundary method which applies a direct forcing method to capture the particle *** applying the direct forcing method,the pressure correction method can eliminate the needs for the determination of free parameters,such as the stiffness coefficient in the elastic forcing method,and for the approximation of the delta *** direct forcing method can be seen as a splitting projection operator which directly projects the fluid velocity obtained from the pressure correction method to capture the particle *** direct forcing method directly computes the artificial forcing at flow elements which eliminates the transformation between flow element and particle *** makes the new method simpler and more *** sedimentations of one and two sphere particles are simulated to validate the numerical *** a demonstration of the efficient and capabilities of the new method,sedimentation of a large number of sphere particles in an enclosure is simulated.