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APS -70th Annual Meeting of the APS Division of Fluid Dynamics- Event - A novel device for hydrodynamic separation of inertial particles

机译:APS-APS流体动力学分部第70届年会-活动-一种用于惯性颗粒流体动力分离的新型装置

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Current methods of particle separation, ranging from filtration devices to cyclones are inadequate in terms of maintenance or precision, respectively. A recent analytical work has shown that inertial particles placed in a flow that is temporally and spatially varying, exhibit extremely different behavior for a slight change in their size. In such flows, particles of a certain size can form cluster whereas particles that are larger in diameter by as low as 1% cathat is temporally and spatially varying, exhibit extremely different behavior for a slight change in their size. In such flows, particles of a certain size can form cluster whereas particles that are larger in diameter by as low as 1% can disperse. The objective of this study is to employ this phenomenon and design a device that produces a suitable flow for the realization of this phenomenon. In this poster, we describe our numerical method that was developed to produce an initial design. We then demonstrate that the computed geometry is conducive to particle separation by performing CFD simulations. Finally, we predict the operating regime of this device by computing the diameter and density of the particles that can be separated in practice.
机译:从过滤装置到旋风分离器的当前颗粒分离方法分别在维护或精度上是不足的。最近的一项分析工作表明,放置在随时间和空间变化的流中的惯性粒子,其大小略有变化,表现出极为不同的行为。在这样的流动中,一定大小的颗粒可以形成簇,而直径大到只有1%cathat的颗粒随时间和空间变化,其大小略有变化,表现出截然不同的行为。在这种流中,一定大小的颗粒可以形成簇,而直径较大但低至1%的颗粒可以分散。这项研究的目的是利用这种现象并设计一种设备,该设备可为实现该现象提供合适的流程。在此海报中,我们描述了为产生初始设计而开发的数值方法。然后,我们通过执行CFD模拟证明了计算出的几何形状有利于粒子分离。最后,我们通过计算在实践中可以分离的颗粒的直径和密度来预测该设备的工作状态。

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