【摘要】 针对某型空调客车,应用k-ε紊流模型及贴体坐标,采用SIMPLE算法计算了室内气固耦合传热问题,采用Monte Carlo法分析计算了太阳透射辐射在车室内固体表面引起的附加热流变化,对空调客车室内气流场和温度场进行了数值模拟。通过实验测定对比分析,数值计算值与测定值基本吻合。研究结果表明:乘坐区乘客头部高度水平面内温度分布均匀,比较理想;回风口下方区域的温度和驾驶区司机头部温度偏高,对热舒适性不利。研究结果为改善车内人体冷热舒适性提供了理论依据,对车内气流组织优化设计有指导意义。更多还原

【Abstract】 By k-ε turbulenct mode and body fitted coordinate, the indoor air flow and solid heat transfer programs were resolved by finite element method for ZK6118 air-conditioned bus.The effect of solar radiation was taken into account by means of the Monte Carlo method and this auxiliary heat f low on the faces of the indoor solids was the source term of the energy equation.The air distribution of the velocity and temperature fields in the chamber were numerically simulated.The airflow field and temperature field were investigated in representative air supply modes and air supply parameters.The comparison was carried out between the computed and the measured result.The agreement between them is quite well.The results indicate that the temperature in occupied zone is uniformity,and the temperature under intake zone and around driver’s head zone is higher than that of other zones,which hurts passenger’s and driver’s thermal comfort.A basis is given for the optimized design of air organization in the chamber parameters.更多还原