Numerical Investigation of "Frog-Leap" Mechanisms of Three Particles Aligned Moving in an Inclined Channel Flow
Year: 2015
Author: Xiao-Dong Niu, Ping Hu, Xing-Wei Zhang, Hui Meng, Hiroshi Yamaguchi, Yuhiro Iwamoto
Advances in Applied Mathematics and Mechanics, Vol. 7 (2015), Iss. 2 : pp. 207–228
Abstract
Intrigued by our recent experimental work (H. Yamaguchi and X. D. Niu, J. Fluids Eng., 133 (2011), 041302), the present study numerically investigate the flow-structure interactions (FSI) of three rigid circular particles aligned moving in an inclined channel flow 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 effects of the channel inclined angles and Reynolds numbers. It is found that the asymmetric 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.
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Journal Article Details
Publisher Name: Global Science Press
Language: English
DOI: https://doi.org/10.4208/aamm.2014.m563
Advances in Applied Mathematics and Mechanics, Vol. 7 (2015), Iss. 2 : pp. 207–228
Published online: 2015-01
AMS Subject Headings: Global Science Press
Copyright: COPYRIGHT: © Global Science Press
Pages: 22
Author Details
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