考虑加热面粗糙度和材料的沸腾换热修正模型

doi:10.13229/j.cnki.jdxbgxb20180567

摘要/Abstract

摘要：

在Chen模型基础上，综合考虑加热面粗糙度和材料对沸腾换热的影响，对Chen模型的核态沸腾换热项进行修正。所得修正后模型能有效预测粗糙度R _a≤4.62 μm的铜加热面和R _a≤8.12 μm的铝加热面的沸腾换热结果，与试验数据相比，总体误差在30%以内。

关键词: 动力机械工程, 过冷流动沸腾换热, 粗糙度, Chen模型

Abstract:

Nucleation boiling term of Chen model was modified by considering the influence of roughness and material of the heating surface. The modified model can effectively fit the experiment data of copper heating surface with roughness less than or equal to 4.62 μm and aluminum heating surface with roughness less than or equal to 8.12 μm, and the overall prediction error is within 30%.

Key words: power machinery and engineering, subcooled boiling heat transfer, surface roughness, Chen model

中图分类号:

TK402

胡潇宇,李国祥,白书战,孙柯,李思远. 考虑加热面粗糙度和材料的沸腾换热修正模型[J]. 吉林大学学报(工学版), 2019, 49(6): 1945-1950.

Xiao-yu HU,Guo-xiang LI,Shu-zhan BAI,Ke SUN,Si-yuan LI. Modified boiling heat transfer model considering roughness and material of heating surface[J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(6): 1945-1950.

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