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首页> 外文期刊>Engineering Applications of Computational Fluid Mechanics >Lattice Boltzmann Simulation of Electrokinetic Valving in a Pressure Driven Micro-Junction
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Lattice Boltzmann Simulation of Electrokinetic Valving in a Pressure Driven Micro-Junction

机译：压力驱动微结中电动阀门的格子Boltzmann模拟

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AbstractIn this paper an electrokinetic valving method is simulated using the lattice Boltzmann method in a micro-junction. It is of interest to control the flow, generated by pressure gradient between inlet and outlets of the micro-junction, so that a certain amount of fluid exits from each outlet. This objective is achieved by applying zeta potential on a portion of the channel. Exerting an external electric field on the channel generates vortices above the modified part. Increase of the external electric force results in more powerful vortices which decrease the amount of passing fluid. These vortices can grow large enough to completely block the incoming flow forcing it to change its path to the other outlets functioning as a micro-valve. The discussed phenomenon is simulated by the lattice Boltzmann method for the flow field using the electrokinetic effect as a body force. The results of flow field simulation show good agreement with those of the literature.
机译：摘要本文在微结中使用晶格玻尔兹曼方法模拟了电动阀门方法。令人感兴趣的是控制由微结的入口和出口之间的压力梯度产生的流量，以使一定量的流体从每个出口流出。通过在通道的一部分上施加ζ电势来实现该目的。在通道上施加外部电场会在修改部分上方产生涡旋。外部电力的增加导致更强大的涡流，从而减少了通过的流体量。这些涡流可能会增大到足以完全阻止流入的气流，从而迫使其改变其通向其他充当微型阀出口的路径。讨论的现象是通过使用电动效应作为体力的流场的格子Boltzmann方法进行模拟的。流场仿真结果与文献报道吻合良好。

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