弓形折流板开孔位置的数值模拟研究  

Numerical simulation of the opening position of segmental baffle

作　　者：李贵 郑秋云[3] 张信荣[3] 唐树江[1] Li Gui;Zheng Qiuyun;Zhang Xinrong;Tang Shujiang(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)

机构地区：[1]湘潭大学数学与计算科学学院,湘潭411100 [2]湖南医药学院计算机科学教学研究部,怀化418000 [3]北京大学工学院,北京100871

出　　处：《应用力学学报》2020年第1期359-364,I0025,共7页Chinese Journal of Applied Mechanics

基　　金：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)

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。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.

关 键 词：开孔位置 弓形折流板 性能评价因子 传热优化 

分 类 号：O368[理学—流体力学]