基于FloEFD的送风参数对乘员热感觉的影响分析

Influence of air supply parameters of air‐conditioning on thermal sensation ofpassengers based on FloEFD

目的研究空调送风参数对乘员热感觉的影响。方法运用数值模拟技术对湿热环境下某车舱内乘员的近体环境进行仿真分析,将模拟结果与试验结果进行对比以验证仿真模型的准确性,基于已验证的计算模型,采用PMV指标对乘员的热感觉进行评价,分析送风温度和送风速度对乘员热感觉的影响。结果试验结果与模拟结果对比,误差在10%以内,说明仿真模型具有一定的可信度,运用仿真手段获取到空调送风参数对乘员热感觉的影响规律。结论降低温度和提高风速可有效降低乘员热感觉,为空调送风设计等提供了理论依据。

Objective To study the influence of different air supply parameters of air⁃conditioning on occupants’ther⁃mal sensation.Methods Numerical simulation technology was used to simulate and analyze the near body environment of passengers in a cabin under a humid and hot environment.The results of numerical simulation were compared with the test results to verify the accuracy of the simulation model.Based on the verified calculation model,PMV was used as the evalua⁃tion index of thermal sensation,and the influence of the supply air temperature and wind speed on occupants’thermal sen⁃sation was analyzed.Results Based on the comparison between the test results and simulation results,the error value was within 10%,suggesting that the calculation model had some credibility,and the way in which air supply parameters of air⁃conditioning affected the thermal sensation of passengers was better understood via simulation.Conclusion Reducing temperature and increasing wind speed can effectively reduce the thermal sensation of passengers.The results of this study can provide data for the air supply design of air conditioning.