物体表面在雨露条件下换热性能分析
毕业论文关键词 雨 露 换热特性 数值仿真
Title Analysis of Surface heat transfer performance in conditions of rain and dew
Abstract For getting the surface heat transfer performance under the conditions of rain or dew, set up the corresponding test bench and measure the temperature of each surface of flat and tilt plates under the sunny or rainy conditions. Firstly, it is analyzed that the main factors which influence the surface temperatures under sunny conditions and the difference among the surfaces of flat plate, as well as effects of the tilt of the horizontal plate on temperature field. Then the surface temperature variation regularity of continuous and showery rains is analyzed and compared. Respectively, carry on the numerical simulation for the surface temperatures of the weather conditions of sun, rainfall and dew. The results show that the consequences of numerical simulation can well reproduce the variation of the surface temperature, and the absolute difference is within a reasonable range.
Keywords Rain Dew Heat transfer characteristics Numerical Simulation
目录
1.绪言.1
1.1应用背景与研究意义·1
1.2.1雨条件下表面换热的研究进展..2
1.2.2露条件下表面换热的研究进展.3
1.3本文的主要工作：5
2实验测温装置设计5
2.1实验系统介绍5
2.2热电偶的制作、标定与布置6
2.2.1热电偶的制作6
2.2.2热电偶的标定7
2.2.3热电偶的布置..8
2..3其他测量系统装置介绍9
3物体表面换热的实验研究.11
3.1晴天条件···12
3.1.1水平板不同位置温度的比较.13
3.1.2水平板与倾斜板的温度比较.16
3.2降雨条件···18
3.2.1连续降雨时物体表面温度的分析.18
3.2.2阵雨时物体表面温度的分析.21
4.物体表面换热的数值模拟..23
4.1物理模型及其简化···23
4.1.1实验模型的简化23
4.1.2钢板模型及网格划分23
4.2晴天条件下物体表面温度的模拟···23
4.2.1边界条件的设置23
4.2.2求解方法..24
4.2.3晴天条件下数值模拟结果分析..25
4.2.4数值模拟结果和实验结果的对比..26
4.3雨天条件下物体表面温度模拟··27
4.3.1边界条件的设置..27
4.3.2降雨条件下数值模拟结果分析28
4.3.3数值模拟结果和实验结果的对比.29
4.4露条件下物体表面温度模拟···30
4.4.1边界条件的设置..30
4.4.2露条件下数值结果模拟结果分析..30
5实验改进与展望..31
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