A New Method of Simulating Fiber Suspensions and Applications to Channel Flows  

作　　者：YANG Wei ZHOU Kun 杨炜;周锟(Department of Mechanics,Zhejiang University,Hangzhou 310027;Clean Combustion Research Center,King Abudullah University of Science and Technology,Thuwal,Saudi Arabia)

机构地区：[1]Department of Mechanics,Zhejiang University,Hangzhou 310027 [2]Clean Combustion Research Center,King Abudullah University of Science and Technology,Thuwal,Saudi Arabia

出　　处：《Chinese Physics Letters》2012年第6期189-192,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 11132008.

摘　　要：A successive iteration method is proposed to numerically simulate fiber suspensions.The computational field is discretized with the collocated finite volume method,and an ergodic hypothesis is adopted to gready accelerate the solution to the Fokker-Planck equation.The method is employed in channel flows with different fiber volume fractions and aspect ratios,and its effectiveness is proved.The numerical results show that the existence of fibers significantly changes the pressure distribution,and the fiber aspect ratio has a greater effect on the velocity profile than on the volume faction.At the center of the channel,the velocity increases along the streamwise direction,while the velocity near the wall decreases slightly.The uncoupling and coupling solutions of the additional stress of the fiber suspensions are quite different.

关 键 词：EQUATION SUSPENSIONS ITERATION 

分 类 号：O17[理学—数学]