Fluid-structure interaction of three-dimensional magnetic artificial cilia
Fluid-structure interaction of three-dimensional magnetic artificial cilia
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DOI：
10.1017/jfm.2012.306
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发表时间：
2012-10-10
影响因子：
3.7
通讯作者：
Onck, P. R.
中科院分区：
文献类型：
--
作者：
Khaderi, S. N.;Onck, P. R.
开发了一个数值模型来分析在三维环境中在流体惯性力消失的极限下人工纤毛与周围流体的相互作用。使用有限壳单元对纤毛进行建模，并使用边界元方法对流体进行建模。两个模型之间的耦合是通过在纤毛表面施加无滑移边界条件来执行的。使用文献中提供的各种参考问题来验证模型的性能。该模型用于模拟磁驱动人工纤毛引起的流体流动。结果表明，狭窄且间隔紧密的纤毛产生最大的流量，沿纤毛宽度的异时波在纤毛宽度方向产生显着的流量，并且在纤毛平面外驱动的情况下的恢复冲程强烈依赖于纤毛宽度。
A numerical model is developed to analyse the interaction of artificial cilia with the surrounding fluid in a three-dimensional setting in the limit of vanishing fluid inertia forces. The cilia are modelled using finite shell elements and the fluid is modelled using a boundary element approach. The coupling between both models is performed by imposing no-slip boundary conditions on the surface of the cilia. The performance of the model is verified using various reference problems available in the literature. The model is used to simulate the fluid flow due to magnetically actuated artificial cilia. The results show that narrow and closely spaced cilia create the largest flow, that metachronal waves along the width of the cilia create a significant flow in the direction of the cilia width and that the recovery stroke in the case of the out-of-plane actuation of the cilia strongly depends on the cilia width.