空温式翅片管气化器自然对流换热的数值模拟.pdf

低温与超导制冷技术 Cryo. & Supercond.
第 39 卷第 6 期 Refrigeration Vol. 39 No. 6
空温式翅片管气化器自然对流换热的数值模拟
陈叔平,常智新,韩宏茵,谢福寿,姚淑婷
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兰州理工大学石油化工学院兰州 730050
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摘要建立了深冷空温式星形翅片管气化器的空气侧自然对流换热模型。利用 fluent 软件采用 SST k - ω湍
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流模型和 SIMPLEC 算法对多组不同结构参数、不同内壁面温度的气化器空气侧自然对流换热进行了三维数值模
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拟。由数值模拟结果分析了气化器各结构尺寸大小与壁温对翅片管自然对流换热的影响并拟合了气化器空气侧
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自然对流换热的 Nu 数的计算关联式为工程实际提供参考。
关键词翅片管气化器低温自然对流数值模拟
Numerical study on natural convection heat transfer of fin - tube air - heating vaporizer
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Chen Shuping Chang Zhixin Han Hongyin Xie Fushou Yao Shuting
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College of Petrochemical Engineering Lanzhou University of Technology Lanzhou 730050 China

Abstract The natural convective heat transfer model on the air side of air - heating cryogenic finned - tube vaporizer was
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established. The natural convection heat transfer of vaporizer side air was simulated 3D - numerically used by fluent software
SST model and SIMPLEC algorithm for different structure parameters and inside wall temperature of the vaporizer. Based on the
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result of numerical simulation the influence of different structure sizes and wall temperatures on natural convection heat transfer
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was analysed and a calculation correlation of Nusselt number for the air side natural convection heat transfer of vaporizer was fit-
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ted providing a reference for engineering practice.
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Keywords Fin - tube