Analysis of Velocity Uniformity in a Single Microchannel Plate with Rectangular Manifolds at Different Entrance Velocities

Analysis of Velocity Uniformity in a Single Microchannel Plate with Rectangular Manifolds at Different Entrance Velocities
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矩形歧管单微通道板在不同入口速度下的速度均匀性分析

DOI:
10.1002/ceat.201200496
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发表时间:
2013-06
影响因子:
2.1
通讯作者:
Liang, Lingwei
Liang, Lingwei
中科院分区:
工程技术4区
文献类型:
--
作者:
Shao, Xiaojia;Shao, Xiaojia;Liang, Lingwei;Liang, Lingwei

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研究了不同入口速度下矩形歧管微通道间的速度分布,以及结构参数和入口速度对流动均匀性的影响。入口流速越高,矩形歧管微通道板的流动均匀性越差。在较低的入口速度下,中心对称歧管微通道板的速度分布近似对称。在入口管尺寸较大的平板上,速度分布呈单调增加的趋势,而在出口管尺寸较大的平板上,速度分布呈单调减小的趋势。通过以下条件可以获得相对均匀的流量分布:较长的微通道、较小的微通道宽度、对称的歧管结构、较大的歧管面积以及入口/出口方向与微通道平面垂直。
The velocity distribution among microchannels with rectangular manifolds at different entrance velocities and the influences of structural parameters and entrance velocity on flow uniformity are investigated. The flow uniformity of a microchannel plate with rectangular manifold decreases with higher entrance velocity. At relatively low entrance velocity, the velocity distribution of the microchannel plate with centrosymmetric manifold is approximately symmetric. The velocity distribution becomes monotonically increased in a plate with large inlet manifold, whereas it becomes monotonically decreased in the one with large outlet manifold. A relatively uniform flow distribution can be obtained by the following conditions: longer microchannel, smaller microchannel width, symmetric manifold structure, larger manifold area, and perpendicular direction of inlet/outlet to the microchannel plane.
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