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首页> 外文期刊>Journal of Fluids and Structures >Fluid trapping by two partially shrouded rotating cylinders
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Fluid trapping by two partially shrouded rotating cylinders

机译：通过两个部分遮盖的旋转缸捕获流体

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摘要

In this paper we examine the prospect of using localized flow control for biomimetic fluid trapping. The problem is of interest for applications that call for guided transport of fluid volumes. The study shows that trapping can be achieved with the help of two partially shrouded rotating cylinders in a side-by-side arrangement. Secondary flows that manifest successful trapping resemble recirculation zones forming under the crests of peristaltic deformation waves, in particular with respect to their response to increasing incident flow velocity. Varying the rotation speed of the cylinders provides means to control the amount of trapped fluid. Numerical calculations to support these conclusions are presented in the paper for 0 ≤ Re ≤ 100 and h ≈ 2, where Re and h are, respectively, the Reynolds number and the center-to-center distance between two cylinders divided by the cylinder diameter. Experimental validation of numerical results is performed for 0 ≤ Re ≤ 4.
机译：在本文中，我们研究了使用局部流量控制进行仿生流体捕集的前景。对于要求引导流体体积运输的应用而言，该问题是令人关注的。研究表明，可以通过并排布置的两个部分覆盖的旋转圆柱体来实现捕集。表现出成功捕集的二次流类似于在蠕动形变波峰下方形成的回流区，特别是在它们对增加的入射流速的响应方面。改变气缸的旋转速度提供了控制滞留流体量的手段。本文针对0≤Re≤100和h≈2提出了支持这些结论的数值计算，其中Re和h分别是雷诺数和两个圆柱体之间的中心距除以圆柱体直径。对0≤Re≤4进行数值结果的实验​​验证。

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