Abstract: In order to study the distribution of the internal environment in the livestock and poultry transport carriage and to evaluate the temperature field, the distribution of the fluid flow field and the temperature field are simulated by computational fluid mechanics (CFD) under noload and fullload conditions, and the optimization scheme is proposed and simulated according to the noload simulation results. The temperature and wind speed of the key positions in the compartment were measured and analyzed, and compared with the simulated values. The results showed that the maximum absolute error of the simulated value was 1.7℃. The results of the change of the temperature distribution and the measured value were consistent. There were 22 points with the relative error range of wind speed values below 3%. The temperature uniformity in the optimized compartment improved significantly, and the temperature change amplitude was small. At full load, the temperature distribution was similar to that of noload, but the overall temperature increased slightly. The correctness of the CFD model is verified to provide a reliable basis for the optimization.

Key words: livestock and poultry transport vehicles, calculating fluid dynamics, temperature field, air flow field

摘要： 为研究畜禽运输车厢体内环境的分布情况以及对温度场进行评估，利用计算流体力学（CFD）的方法，模拟出在空载及满载条件下内气流流场和温度场的分布情况，同时根据空载模拟结果提出优化方案并模拟。测量与分析厢体内关键位置的温度和风速，并与模拟值比较。结果表明：模拟空载时模拟值与测量值最大绝对误差1.7℃，模拟得到厢体的温度分布变化情况和测量值所得结果一致，风速值相对误差范围在3%以下的有22个点。优化后厢体内温度均匀度改善明显，温度变化幅度小；满载时，温度分布与空载相似，但整体温度有些许上升。验证CFD模型的正确性，为优化提供可靠基础。

关键词: 畜禽运输车, 计算流体力学, 温度场, 气流流场