| 弓形折流板开孔位置的数值模拟研究 |
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| 引用本文： | 李贵,郑秋云,张信荣,唐树江. 弓形折流板开孔位置的数值模拟研究[J]. 应用力学学报, 2020, 0(1): 359-364,I0025 |
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| 作者姓名： | 李贵 郑秋云 张信荣 唐树江 |
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| 作者单位： | 湘潭大学数学与计算科学学院;湖南医药学院计算机科学教学研究部;北京大学工学院 |
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| 基金项目： | 国家自然科学基金(11171281;11971411);湖南省教育厅自然科学基金重点项目(18A067) |
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| 摘 要： | 在相同的开孔面积和开孔数目前提下,本文数值研究在开孔位置不同时圆缺高度为0.2D(D为折流板直径)的单弓型折流板换热器的壳程换热与流动阻力问题。数值结果表明:在折流板压强高的“高压区”,均匀地开孔对减小换热器壳程压降效果更好,其综合换热性能的性能评价因子E值也更好;在壳程入口速度为0.1m/s时,通过改变开孔位置,壳程压降可优化3%左右。
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| 关 键 词： | 开孔位置 弓形折流板 性能评价因子 传热优化 |
Numerical simulation of the opening position of segmental baffle |
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| Li Gui,Zheng Qiuyun,Zhang Xinrong,Tang Shujiang. Numerical simulation of the opening position of segmental baffle[J]. Chinese Journal of Applied Mechanics, 2020, 0(1): 359-364,I0025 |
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| Authors: | Li Gui Zheng Qiuyun Zhang Xinrong Tang Shujiang |
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| Affiliation: | (Institute of Mathematics and Computer Science,Xiangtan University,411100,Xiangtan,China;Department of Computer Teaching Research,Hunan University of Medicine,418000,Huaihua,China;Department of Energy and Resources,College of Engineering,Peking University,100871,Beijing,China) |
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| Abstract: | On the premise of the same opening area and the number of opening holes,the effects of different opening positions of the segmental baffles of a single-bow baffle heat exchanger with a circular gap height of 0.2D on the heat transfer and flow resistance are studied in this paper.Numerical results show that the uniform opening hole in the high-pressure zone can better reduce the pressure drop of the heat exchanger,and it can also get a better efficiency evaluation coefficient(E)value of the comprehensive heat transfer performance.When the inlet velocity of shell side is 0.1m/s,the pressure drop of the shell side can be optimized to 3% by changing the positions of the opening hole. |
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| Keywords: | opening position segmental baffle efficiency evaluation coefficient heat transfer optimization |
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