圆管管翅式换热器肋侧换热系数的数值求解方法  

Numerical Simulation of Heat Transfer Coefficient on the Fin Side Surface in Circular Tube Bank Fin Heat Exchanger

作　　者：苏梅[1,2] 林志敏[1,2] 王良璧[1,2] 

机构地区：[1]兰州交通大学机电工程学院,甘肃兰州730070 [2]铁道车辆热工教育部重点实验室(兰州交通大学),甘肃兰州730070

出　　处：《工程热物理学报》2012年第10期1789-1792,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50876040)

摘　　要：本文以空气和水为流动介质,在空气进口流速u_(in)=1～6m/s的范围内,在适体坐标系下,采用耦合数值计算的方法,对圆管管翅式换热器肋侧换热系数进行数值求解,并与实验值相比较。结果表明本文提出的采用换热器总传热系数K_1求解得到的肋侧换热系数与实验值最为接近,从而验证了本文提出的数值方法的准确性和可靠性。The heat transfer coefficient on the fin side surface in circular tube bank fin heat exchanger was studied by using the conjugated simulation method in body-fitted coordinate system with the inlet air flow rate ranging from 1 m/s to 6 m/s in this paper. The numerical results were compared with the experimental results, and the discrepancies were presented in this paper. The results reveal that heat transfer coefficient on the fin side surface obtained by using the overall heat transfer coefficient K1 agrees well with the experimental results, so the accuracy and reliability of this numerical method proposed in this paper can be verified.

关 键 词：圆管管翅式换热器 耦合计算 总传热系数 肋侧换热系数 

分 类 号：TK124[动力工程及工程热物理—工程热物理]