Objective To obtain flow and temperature distribution in flowing heat transfer analysis of vehicle compartment. Methods A vehicle compartment was taken as the research object and the compartment was reasonably simplified. The compu-tational fluid dynamic (CFD) model for computing air flow and heat transfer in the armored compartment was established. Air flow in the compartment was described with the standard κ-ε two-equation turbulence model. With software Fluent, simulation study on the temperature field was carried out for vehicle compartment in solar radiation. Results The relationship between dis-tribution of temperature field and vehicle running time was obtained. The results were compared between the simulation and proving ground test, the maximum contrast error was about 12%. Conclusion With the increase of environment temperature, the temperature of vehicle compartment shows a gradient change, and the maximum temperature difference is 5 ℃ in different posi-tion inside the vehicle compartment. CFD can provide technical support for calculation and prediction of temperature field dis-tribution.%目的 全面获得车舱流动传热分析的流场和温度场分布.方法 以某车辆舱室为研究对象,对车舱进行合理简化,建立空气流动与传热的计算流体力学(CFD)模型.针对车舱内温度分布特点,采用标准的κ-ε湍流模型描述舱内的空气流动,利用FLUENT软件对车舱在太阳辐射下进行温度场仿真研究.结果 得到了温度场的分布与车载运行时间的变化规律,并利用实车跑车试验结果与仿真结果进行了对比,对比最大误差约为12%.结论 随着外部环境温度的升高,车舱内部温度均呈现梯度变化,不同位置温度差异最大为5 ℃.CFD能为计算和预测温度场分布提供有效的技术支持.
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