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首页> 外文期刊>Engineering Applications of Computational Fluid Mechanics >ISPH Modelling and Analysis of Fluid Mixing in a Microchannel with an Oscillating or a Rotating Stirrer
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ISPH Modelling and Analysis of Fluid Mixing in a Microchannel with an Oscillating or a Rotating Stirrer

机译：具有振荡或旋转搅拌器的微通道中流体混合的ISPH建模和分析

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AbstractIn the present study, we apply a robust Incompressible Smoothed Particle Hydrodynamics method improved by advanced second-order discretization in order to examine active micromixers equipped with a rotating or an oscillating stir-bar. Since it has a Lagrangian nature and it is based on particles, Smoothed Particle Hydrodynamics is an appropriate and convenient method for the moving boundary and for one-way coupled fluid–solid interactions. However, this method has not been applied to simulate active micromixers. The present study thus introduces a convenient Smoothed Particle Hydrodynamics method for modelling active micromixers. In addition, mixing flow is investigated by considering the vorticity field. Cross-shaped and straight stir-bars are also examined and evaluated. The presented results show that the cross-shaped stir-bar is more efficient than the straight stir-bar. In addition, the rotating cross-shaped stir-bar can be introduced as an appropriate stirrer, while the rotating straight sti...
机译：摘要在本研究中，我们应用了经过先进的二阶离散化改进的鲁棒的不可压缩的平滑粒子流体动力学方法，以研究配备有旋转或振荡搅拌棒的有源微混合器。由于它具有拉格朗日性质，并且基于粒子，因此平滑粒子流体动力学是移动边界和单向流固耦合的一种合适且便捷的方法。但是，该方法尚未应用于模拟有源微型混合器。因此，本研究介绍了一种用于建模主动微混合器的便捷的“平滑粒子流体动力学”方法。另外，通过考虑涡度场来研究混合流。还检查和评估了十字形和直形搅拌棒。给出的结果表明，十字形搅拌棒比直搅拌棒更有效。另外，可以将旋转的十字形搅拌棒作为适当的搅拌器引入，而旋转的直搅拌器则可以作为搅拌器。

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