滑油冷却器绕丝支撑结构传热特性分析  

Analysis of Heat Transfer Characteristics of Wire Wound Support Structure of Oil Cooler

作　　者：王俊杰 丁铭 WANG Jun-Jie;DING Ming(Fundamental Science on Nuclear Safety and Simulation Technology Laboratory,Harbin Engineering University,Harbin 150001,China;School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]哈尔滨工程大学核安全与仿真技术国防重点科学实验室,哈尔滨150001 [2]上海交通大学机械与动力工程学院,上海200240

出　　处：《工程热物理学报》2020年第11期2795-2800,共6页Journal of Engineering Thermophysics

摘　　要：滑油冷却器是核动力系统中广泛使用的换热设备。针对滑油黏度高、传热性能差的特点,提出了一种强化滑油冷却器壳侧传热的绕丝支撑结构。利用STAR-CCM+软件模拟并分析了绕丝的主要结构参数对其传热特性的影响。结果表明,绕丝结构会迫使壳侧流体达到交混状态,有效地破坏了滑油的流动边界层及热边界层,强化了壳侧传热。低缠绕角度绕丝结构的传热性能会优于高角度绕丝。三角形、正方形等带有尖锐棱角的绕丝强化换热效果会更好。单头绕丝的综合性能比双头绕丝高10%左右。The oil cooler is a widely used heat exchange equipment in the nuclear power system.Aiming at the characteristics of high viscosity and poor heat transfer performance of lubricating oil,a wire wound support structure was designed to enhance the heat transfer of the oil cooler shell side.Using the commercial CFD code,STAR-CCM+ to simulate and analyze the influence of the main structural parameters of the winding on its heat transfer characteristics.The results show that the wire-wound structure will force the shell-side fluid to reach a mixed state,which effectively destroy the flow boundary layer and thermal boundary layer of the oil,and strengthen the shell-side heat transfer.The heat transfer performance of the low angle winding structure is better than that of high angle winding.Triangle and square with sharp edges and corners can enhance the heat transfer better.The comprehensive performance of single head winding is about 10% higher than that of double head winding.

关 键 词：绕丝支撑结构 壳侧强化传热 管壳式换热器 数值模拟 滑油冷却器 

分 类 号：TK124[动力工程及工程热物理—工程热物理]