为研究海拔对车辆散热器翅片性能的影响,编写了基于Matlab的管带式散热器计算程序,在验证仿真程序正确的基础上,分别计算不同热物理条件下百叶窗翅; 片、平直翅片、波纹翅片、锯齿翅片4种常见翅片散热器在不同海拔地区的空气侧和水侧出口温度、空气侧压降、空气侧换热系数、散热量等参数;分析了海拔变化; 对不同翅片散热器散热能力的影响,对比了不同翅片散热器在变海拔下的散热特性和风阻特性.由综合换热系数可知,百叶窗翅片的散热能力最强,锯齿形翅片的海; 拔适应性最好.In order to reveal the effect of altitude on the performance of vehicle; radiator fins,the simulation program for tubular radiator is developed; in Matlab environment. After verifying the correctness of the simulation; program, the air-side and water-side outlet temperatures,the air-side; pressure drop,the air-side heat transfer coefficient and the heat; dissipation of radiators with four common fins (namely; louver,straight,wavy and serrated fins) are calculated under different; thermal physical conditions at different altitudes. Then,the cooling; capacity of different radiator fins are analyzed under the influence of; various altitudes,and the heat transfer performance as well as the wind; resistance performance of different radiator fins at various altitudes; are analyzed in a comparative way. It is found from the obtained; comprehensive heat transfer coefficient that louver fin is of the; strongest cooling capacity, while serrated fin is of the best; adaptability to altitude.福建省自然科学基金资助项目; 深圳市科技计划项
