HEAT TRANSFER ANALYSISIN MIXED CONVECTION
Heat transfer is analyzed from a different view in mixed convection in this paper. A concept, namely averaged heat transfer resistance coefficient, is used to describe heat transfer performance. For local position, heat transfer defined by generalized Fourier law is determined by fluid conductance and turbulence heat transfer. On the other hand, heat resistance over the cross section is the integer of the local resistance, where the weight, a function of spatial position, can be expressed by product oflocal heat transfer and temperature. To enhance heat transfer, it is crucial to reduce the heat resistance where the weight is big, namely near the wall. Heat transfer performance under different buoyancy effect is analyzed by the new. The results show that flow structure and heat transfer are closely connected by a straightforward expression. Heat transfer mechanism of enhancement and deterioration under different stages can be perfectly explained, which can predict heat transfer qualitatively.
Huang Shan-Fang Ma Tai-Yi Gu Han-Yang Yang Yan-Hua Yan Xiao
School of Nuclear Science and Engineering, Shanghai Jiaotong University Shanghai, China Zhengzhou Branch, China Nuclear Power Engineering Co.Ltd.Zhengzhou, China Nuclear Power Institute of China, Chengdu, China
国际会议
18th International Conference on Nuclear Engineering(第18届国际核能工程大会 ICONE 18)
西安
英文
1-5
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）