Publication Date:
2013-05-09
Description:
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. The flow uniformity of parallel microchannels influences the reaction performance. The effects of structural parameters and entrance velocities on the velocity distribution in a microchannel plate with rectangular manifolds are investigated by a 3D CFD model in order to enhance the design and optimization process for micro-channel plates. Relevant factors for a uniform flow distribution are evaluated.
Print ISSN:
0930-7516
Electronic ISSN:
1521-4125
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
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