کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
510500 | 865768 | 2013 | 10 صفحه PDF | دانلود رایگان |
• Fast numerical method to compute the colonial dynamics of micro-swimmers.
• Includes long-range interactions and short-range steric effects between swimmers.
• The methodology uses the immersed boundary framework.
• Can efficiently simulate many thousands of interacting motile particles in 3D.
• Can use the method to study many biological and physical phenomena.
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.
Journal: Computers & Structures - Volume 122, June 2013, Pages 239–248