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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >Numerical and experimental investigation on the realization of target flow distribution among parallel mini-channels
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Numerical and experimental investigation on the realization of target flow distribution among parallel mini-channels

机译：数值和实验调查实现目标的流量分配平行mini-channels

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摘要

Fluid flow maldistribution is considered as one of the main causes of performance deterioration in various energy and process systems, especially when parallel micro- or mini-channel fluidic networks are involved. For a specific purpose, the optimal flow distribution is not necessarily uniform. However, specific non-uniform distributions are somewhat more difficult to achieve than uniform ones. The insertion of a geometrically optimized baffle has been numerically confirmed as an effective solution to this issue, but experimental validation is still lacking which is indispensable for bridging the gap between theory and practice. This paper presents a numerical and experimental investigation on the realization of target flow distribution among parallel mini-channels, using the optimized baffle insertion method. A 15-channel fluidic network integrated with the distributor and the collector is fabricated and tested. Various perforated baffles are optimized and fabricated corresponding to different target distributions (uniform, ascending and descending). PIV technique is used for the flow distribution measurement while CFD simulations are also performed for comparison. CFD results and PIV data show that different target distributions could be successfully achieved by the optimized baffle insertion method. The robustness of the optimized baffle for uniform distribution is also evaluated and discussed to provide some guidelines for future applications. (C) 2016 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
机译：流体分布不均是之一性能恶化的主要原因各种能源和过程系统,特别是当平行微或mini-channel射流网络。不一定是最优流分布制服。分布更加困难实现比均匀。几何优化的挡板数值确认为一个有效的解决方案这个问题,但仍然是实验验证缺乏为桥接的是必不可少的理论和实践之间的差距。提出了一种数值和实验调查目标的实现流程分布在平行mini-channels,使用优化板插入方法。网络集成与15-channel射流经销商,收藏家和制作的测试。并制作相应的不同的目标分布(制服,提升和降序)。CFD模拟时分布测量也进行了比较。和PIV数据表明,不同的目标分布可以成功地通过优化板插入方法。鲁棒性优化的挡板的制服分布也评估和讨论为将来的应用程序提供一些指导方针。(C) 2016化学工程师学会。爱思唯尔出版的帐面价值保留所有权利。

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