期刊
COMPUTERS & STRUCTURES
卷 122, 期 -, 页码 239-248出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compstruc.2013.03.007
关键词
Cell locomotion; Swimming microorganisms; Active suspension; Immersed boundary; Collective behavior
We present a mathematical model and simulation method to compute the colonial dynamics of micro-swimmers that interact directly and through the fluid they are suspended in. The model uses the stress generated by each self-motile particle for long-range interactions and includes short-range steric effects between particles. The time-step computational cost is O(N logN + M), with N the total number of mesh points, and M the number of swimmers. This fast method enables us to efficiently simulate many thousands of interacting self-propelling particles in three dimensions and with background flows. We show examples of collective behavior in suspensions of pusher and puller micro-swimmers. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.
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