Numerical Simulation on Turbulent Flow and Heat Transfer of the Square Cross-section Helical Duct

被引：0
|
作者：
Chen, Hongxia [1 ]
Wang, Wei [1 ]
Xu, Jinliang [1 ]
机构：
[1] North China Elect Power Univ, Sch Renewable Energy, Beijing 102206, Peoples R China
来源：
2013 INTERNATIONAL CONFERENCE ON MATERIALS FOR RENEWABLE ENERGY AND ENVIRONMENT (ICMREE), VOLS 1-3 | 2013年
关键词：
Fluent; Square cross-section; Helical duct; Flow; Heat transfer;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A three-dimensional model was established to investigate the flow and heat transfer of square helical duct in which constant heat flux were specified in the inside wall and the turbulent flow at Re=28628 was considered. As a result, it was found that the area of turbulent region was larger at import region. Then, the centre of turbulent region closed to the inner wall. Meanwhile, the largest axial velocity was near the external wall. The turbulent intensity and the Nu number changed to stabilize after the spiral angle of 450 degrees. In the cross-section, the emergence of multiple secondary flows enhanced the asymmetry of flow and heat transfer.
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页码：458 / 461
页数：4
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