Drag with external and pressure drop with internal flows: a new and unifying look at losses in the flow field based on the second law of thermodynamics
Drag with external and pressure drop with internal flows: a new and unifying look at losses in the flow field based on the second law of thermodynamics
复制标题
外部阻力和内部流动的压降:基于热力学第二定律对流场损失的新的、统一的看法
DOI:
10.1088/0169-5983/45/5/055507
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发表时间:
2013
影响因子:
1.5
通讯作者:
B. Schmandt
中科院分区:
文献类型:
--
作者:
H. Herwig;B. Schmandt
Internal and external flows are characterized by friction factors and drag coefficients, respectively. Their definitions are based on pressure drop and drag force and thus are very different in character. From a thermodynamics point of view in both cases dissipation occurs which can uniformly be related to the entropy generation in the flow field. Therefore we suggest to account for losses in the flow field by friction factors and drag coefficients that are based on the overall entropy generation due to the dissipation in the internal and external flow fields. This second law analysis (SLA) has been applied to internal flows in many studies already. Examples of this flow category are given together with new cases of external flows, also treated by the general SLA-approach.
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DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
H. Herwig;B. Schmandt;M. Uth
通讯作者:
M. Uth
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
B. Schmandt;H. Herwig
通讯作者:
H. Herwig
DOI:
10.1115/1.3167193
发表时间:
1983
期刊:
Journal of Applied Mechanics
影响因子:
--
作者:
A. Messiter
通讯作者:
A. Messiter
影响因子:
2.3
作者:
D. Anand;K. W. Lindler;S. Schweitzer;W. Kennish
通讯作者:
W. Kennish
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
B. Schmandt;H. Herwig
通讯作者:
H. Herwig