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
复制
发表时间:
2013
影响因子:
1.5
通讯作者:
B. Schmandt
B. Schmandt
中科院分区:
工程技术4区
文献类型:
--
作者:
H. Herwig;B. Schmandt

文献摘要

参考文献

被引文献

相似文献

内部和外部流动的特点是摩擦系数和阻力系数,分别。它们的定义基于压降和阻力,因此在性质上非常不同。从热力学的角度来看,在这两种情况下,耗散都发生了,它可以均匀地与流场中的熵产生有关。因此,我们建议通过摩擦系数和阻力系数来解释流场中的损失,摩擦系数和阻力系数基于由于内部和外部流场中的耗散而产生的总熵。这种第二定律分析(SLA)已经在许多研究中被应用于内部流动。这种流动类别的例子一起给出了新的情况下,外部流动,也处理一般SLA的方法。
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.
层流中的损失系数:微流系统设计不可或缺的
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
微连接处流动的性能评估:水头变化与水头损失系数
DOI: --
发表时间: 2013
期刊:
影响因子: --
作者:
B. Schmandt;H. Herwig
通讯作者: H. Herwig
边界层相互作用理论
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
太阳能吸收式冷却循环和系统的第二定律分析
DOI: 10.1115/1.3267598
发表时间: 1984
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