鱼鳞仿生强化传热管内流体对流传热特性和熵产分析  

Analysis of Convective Heat Transfer Characteristics and Entropy Generation of Fluid in Fish-scale Bionic Enhanced Heat Transfer Tubes

作　　者：刘小丫 赵新文[1] 肖红光 冉令可 张银星 张永发[1] 孙吉晨 丁铭[3] Liu Xiaoya;Zhao Xinwen;Xiao Hongguang;Ran Lingke;Zhang Yinxing;Zhang Yongfa;Sun Jichen;Ding Ming(College of Nuclear Science and Technology,Naval University of Engineering,Wuhan,430033,China;Wuhan Second Ship Design and Research Institute,Wuhan,430025,China;College of Nuclear Science and Technology,Harbin Engineering University,Harbin,150001,China)

机构地区：[1]海军工程大学核科学技术学院,武汉430033 [2]武汉第二船舶设计研究所,武汉430205 [3]哈尔滨工程大学核科学与技术学院,哈尔滨150001

出　　处：《核动力工程》2024年第5期92-98,共7页Nuclear Power Engineering

基　　金：173重点基础研究项目(2023-173ZD-135);国家自然科学基金项目(12102474)。

摘　　要：随着仿生学的发展,仿生技术具有较好的减阻、传热效果。受自然界鱼鳞启发,本文提出了3类仿生强化传热管,通过数值模拟研究了湍流状态下(雷诺数Re在15700~62900范围内)仿生强化传热管不同深度、间距和角度对管内流体流动传热特性的影响。结果表明,3类仿生强化传热管均具有良好的强化传热效果,深度越大、间距越小、角度越小,则强化传热效果越好。相同条件下,对仿生强化传热管综合性能和熵产进行分析发现,类型2仿生强化传热管的综合性能最优,其评价准则数(PEC)最大,功率损失最小。With the development of bionics,bionic technology has better drag reduction and heat transfer effects.Inspired by the fish-scale bionic concept,three biomimetic enhanced heat transfer tubes are proposed.The effects of different depths,spacings and angles of bionic enhanced heat transfer tubes on the fluid flow and heat transfer characteristics in the turbulent flow regime(Re=15700-62900)are studied by numerical simulation.The results show that the three bionic enhanced heat transfer tubes all have perfect heat transfer enhancement effect.The greater the depth,the smaller the spacing and the smaller the angle,the better heat transfer enhancement effect.Under the same conditions,the comprehensive performance and entropy generation of bionic enhanced heat transfer tubes are analyzed,and it is found that the second type has the best comprehensive performance,the largest performance evaluation criteria(PEC)and the smallest power loss.

关 键 词：鱼鳞仿生 评价准则数(PEC) 熵产 强化传热 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TL331[动力工程及工程热物理—热能工程]