某地铁车辆客室送风道送风均匀性优化分析

Optimization Analysis of Compartment Air Supply Uniformity in Air Delivery Duct of a Metro Vehicle

针对某地铁车辆客室送风道结构,采用STAR-CCM+软件分析其送风均匀性。经计算发现,当采用初始送风道结构时,客室两端送风量较大,各段送风口的质量流量偏离整体送风口平均值较多,其相对误差的标准差也较大,客室送风均匀性较差。通过改变送风道结构和增加主风道内隔板等方法优化初始送风道结构,优化后各段送风口的质量流量更接近整体送风口平均值,其相对误差的标准差也有所减小,客室的送风均匀性获得了极大的提高。

Targeting the air delivery duct structure of a metro vehicle compartment,the STAR-CCM+software is used to analyze its air supply uniformity.The calculation results show that when adopting the initial air delivery duct structure,the air volume of both ends of the compartment is relatively larger,the mass flow deviation of each sectional air supply outlet from the overall average value is relatively higher,and the standard deviation of relative error is also relatively larger,so the uniformity of compartment air supply is relatively poor.By methods such as changing air delivery duct structure and adding main duct internal baffle,the initial air delivery duct structure is optimized,and the mass flow of each sectional air supply outlet after optimization becomes closer to the overall average value,and the standard deviation of relative error is reduced,with the uniformity of compartment air supply being significantly improved.