Numerical Investigation of"Frog-Leap"Mechanisms of Three Particles Aligned Moving in an Inclined Channel Flow  

作　　者：Xiao-Dong Niu Ping Hu Xing-Wei Zhang Hui Meng Hiroshi Yamaguchi Yuhiro Iwamoto 

机构地区：[1]College of Eengineering,Shantou University,Shantou 515063,China [2]Energy Conversion Research Center,Department of Mechanical Engineering,Doshisha University,Kyoto 630-0321,Japan

出　　处：《Advances in Applied Mathematics and Mechanics》2015年第2期207-228,共22页应用数学与力学进展（英文）

基　　金：This study was supported by the National Natural Science Foundation of China(NSFC No.11372168);the Second-batch Leading Talent Project of Guangdong Province of China,the Personal Research Starting Founding of Shantou University of China,the Natural Sci-ence Foundation of Guangdong Province of China and the Academic Frontier Research Project on "Next Generation Zero-emission Energy Conversion System"of Ministry of Education,Culture,Sports,Science and Technology in Japan;The financial support is gratefully acknowledged.

摘　　要：Intrigued by our recent experimental work(H.Yamaguchi and X.D.Ni-u,J.Fluids Eng.,133(2011),041302),the present study numerically investigate theflow-structure interactions(FSI)of three rigid circular particles aligned moving in an inclined channelflow at intermediate Reynolds numbers by using a momentum-exchanged immersed boundary-lattice Boltzmann method.A"frog-leap"phenomenon observed in the experiment is successfully captured by the present simulation and flow characteristics and underlying FSI mechanisms of it are explored by examining the ef-fects of the channel inclined angles and Reynolds numbers.It is found that the asym-metric difference of the vorticity distributions on the particle surface is the main cause of the"frog-leap"when particle moves in the boundary layer near the lower channel boundary.

关 键 词：Frog-leap fluid-structure interactions inclined channelflow lattice Boltzmann method immersed boundary method 

分 类 号：O35[理学—流体力学]