Loss Coefficients in Laminar Flows: Indispensable for the Design of Micro Flow Systems
Loss Coefficients in Laminar Flows: Indispensable for the Design of Micro Flow Systems
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层流中的损失系数：微流系统设计不可或缺的
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
M. Uth
中科院分区：
文献类型：
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作者：
H. Herwig;B. Schmandt;M. Uth
详细讨论了确定管道元件损失的水头损失系数K的概念。虽然到目前为止，它主要应用于完全湍流，但在这里扩展到也包括层流状态。K的具体数值可以通过对从数值模拟获得的熵产生场（第二定律分析）进行积分来确定。针对各种导管组件讨论并说明了这种通用方法。版权所有© 2010 by ASME
The concept of head loss coefficients K for the determination of losses in conduit components is discussed in detail. While so far it has mainly been applied to fully turbulent flows it is extended here to also cover the laminar flow regime. Specific numbers of K can be determined by integration of the entropy generation field (second law analysis) obtained from a numerical simulation. This general approach is discussed and illustrated for various conduit components.Copyright © 2010 by ASME