Computational analysis of amoeboid swimming at low Reynolds number
Computational analysis of amoeboid swimming at low Reynolds number
复制标题
低雷诺数下变形虫游泳的计算分析
DOI:
10.1007/s00285-015-0925-9
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发表时间:
2016
影响因子:
1.9
通讯作者:
Othmer, Hans G.
中科院分区:
文献类型:
--
作者:
Wang, Qixuan;Othmer, Hans G.
Recent experimental work has shown that eukaryotic cells can swim in a fluid as well as crawl on a substrate. We investigate the swimming behavior ofDictyostelium discoideumamoebae who swim by initiating traveling protrusions at the front that propagate rearward. In our model we prescribe the velocity at the surface of the swimming cell, and use techniques of complex analysis to develop 2D models that enable us to study the fluid-cell interaction. Shapes that approximate the protrusions used byDictyostelium discoideumcan be generated via the Schwarz–Christoffel transformation, and the boundary-value problem that results for swimmers in the Stokes flow regime is then reduced to an integral equation on the boundary of the unit disk. We analyze the swimming characteristics of several varieties of swimmingDictyostelium discoideumamoebae, and discuss how the slenderness of the cell body and the shapes of the protrusion effect the swimming of these cells. The results may provide guidance in designing low Reynolds number swimming models.
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