Numerical investigation of flow and heat transfer between concentric cylinders with slit wall
Numerical investigation of flow and heat transfer between concentric cylinders with slit wall
复制标题
带缝隙壁同心圆柱间流动与传热的数值研究
DOI:
10.1016/j.csite.2020.100783
复制
发表时间:
2020-11
影响因子:
6.8
通讯作者:
Ying-Ze Wang
中科院分区:
文献类型:
--
作者:
Dong Liu;Yuan-li Qi;Si-liang Sun;Ying-Ze Wang
This paper investigates the flow field distribution and heat transfer characteristics of turbulent flow between concentric cylinders with slit wall in the outer cylinder. The slit wall cross sections are triangle, rectangle and trapezoid respectively. The governing equations are established by the PANS model which is modified from the standardk - εmodel. The rotating Reynolds number ranges from 2336 to 4682 and axial Reynolds number ranges from 161 to 645, the influence of slit wall cross section on the formation and intensity of small vortex in slit region is analyzed. The results show that the slit wall geometry has a significant influence on the flow field distribution and its heat transfer process, the main vortex in annular region and small scale vortex in slit region has a tendency to merge together in the model with trapezoid cross section, resulting in more intense mixing of fluid with different temperature, therefore, the slit model with trapezoid cross section shows the best heat transfer performance among three models. The present analysis results may be applied for the structural design and optimization of many related rotating machinery.
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DOI:
10.1115/imece2011-63067
发表时间:
2011
期刊:
--
影响因子:
--
作者:
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通讯作者:
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2000
期刊:
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影响因子:
--
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通讯作者:
Richard M. Lueptow
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发表时间:
1963
期刊:
Jsme International Journal Series B-fluids and Thermal Engineering
影响因子:
--
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DOI:
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发表时间:
2016
期刊:
--
影响因子:
--
作者:
Katja Bachmeier
通讯作者:
Katja Bachmeier
影响因子:
4.5
作者:
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通讯作者:
N. Lancial;F. Torriano;F. Beaubert;S. Harmand;G. Rolland