On flow structures associated with large wall mass transfer coefficients in orifice flows
On flow structures associated with large wall mass transfer coefficients in orifice flows
复制标题
孔板流中与大壁面传质系数相关的流动结构
DOI：
10.1016/j.ijheatmasstransfer.2016.06.012
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发表时间：
2016-11
影响因子：
5.2
通讯作者：
Tsuji Yoshiyuki
中科院分区：
文献类型：
--
作者：
Shan Feng;Liu Zhichun;Liu Wei;Tsuji Yoshiyuki
本文采用立体粒子图像测速法（SPIV）和极限扩散电流技术（LDCT）同时测量湍流流场和壁面传质系数。SPIV测量圆管中孔板后的流场是在横断面和纵断面上进行的。采用一点线性估计和二次随机估计计算了与大壁传质系数相关的流场条件平均。结果表明，对旋涡对在大壁传质系数中起重要作用。通过理论分析和数值研究发现，截面壁面传质系数较大的流动结构与文献中增强壁面换热的流动结构相似。
In this study, the turbulent flow field is simultaneously measured by stereoscopic particle image velocimetry (SPIV) and the wall mass transfer coefficient using the limiting diffusion current technique (LDCT). SPIV measurements of the flow field behind an orifice in a round pipe are performed in the cross and longitudinal sections. One-point linear and quadratic stochastic estimations are employed to calculate the conditional average of the flow field associated with the large wall mass transfer coefficient. The results suggest that the counter-rotating vortex pairs play an important role in the large wall mass transfer coefficient. The flow structures associated with a large wall mass transfer coefficient in the cross sections are found to be similar to the flow structures enhancing the wall heat transfer obtained by a theoretical analysis and numerical study in literature.
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DOI：
10.1115/1.3240099
发表时间：
1988-04
影响因子：
1.5
作者：
L. E. Sanchez-Caldera;P. Griffith;E. Rabinowicz
通讯作者：
L. E. Sanchez-Caldera;P. Griffith;E. Rabinowicz
DOI：
10.1007/978-3-642-83787-6_4
发表时间：
1989
期刊：
--
影响因子：
--
作者：
L. Lourenço
通讯作者：
L. Lourenço
影响因子：
2.5
作者：
N. Murray;L. Ukeiley
通讯作者：
N. Murray;L. Ukeiley
影响因子：
2.9
作者：
S. Chouikhi;M. A. Patrick;A. Wragg
通讯作者：
S. Chouikhi;M. A. Patrick;A. Wragg
影响因子：
3.2
作者：
T. Yamagata;Akihiro Ito;Yuki Sato;N. Fujisawa
通讯作者：
T. Yamagata;Akihiro Ito;Yuki Sato;N. Fujisawa