轿车车室内温度场和速度场的数值模拟

The numerical simulation of temperature field and velocity field in a car

数值模拟了汽车车室内的温度场和速度场,忽略太阳辐射,采用RNG模型,近壁面用壁面函数法进行处理,分析了不同的送风速度,送风温度,出口压力对汽车室内温度场和速度场分布的影响,对车室内的温度场和速度场的均匀性做出评价并对其优化。结果表明在车室后排空间添加一个送风口,可以有效地改善车室内温度场和速度场分布的均匀性,温度场均匀性提高了36.5%,速度场均匀性提高了45.2%。

In this paper, the temperature field and velocity field in a car interior were numerically simulated, the solar radia- tion was ignored, the RNG model was used, and wail was deh with the wall function method. The effects of different supply air speed, supply air temperature and outlet pressure on the temperature field and velocity field of a car interior were analyzed, the uniformity of temperature field and velocity field in the car was evaluated and optimization was made. The results show that adding an air in the rear space of the car can effectively improve the uniformity of the temperature field and the velocity field dis- tribution, the uniformity of temperature field and velocity field can be improved by 36.5% and 45.2% respectively.