地铁车辆可清洁式均匀送风道数值仿真分析
刘林林孙方李泉
Numerical Simulation Analysis of Cleanable Uniform Air Ducts in Metro Vehicles
LIU LinlinSUN FangLI Quan
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作者信息:中车南京浦镇车辆有限公司， 210031， 南京
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Affiliation:CRRC Nanjing Puzhen Co., Ltd., 210031, Nanjing, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.05.034
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中图分类号/CLCN:U270.38
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栏目/Col:研究报告
摘要:
［目的］随着乘客对地铁车内空气品质和空调均匀送风的追求越来越高，有必要研究提高地铁车辆可清洁式送风的均匀性。［方法］采用CFD (计算流体动力学)法对送风道内气流组织进行数值模拟，优化风道内部结构，并制作了一套全尺寸送风道，进行空调与风道配套试验。［结果及结论］各出风口数值模拟预测风量和试验实测风量整体变化趋势一致；增加隔板后，送风均匀性有较大改善，80%以上的出风口预测风量与试验风量之间偏差在15%之内，其余在15%～20%之间；同时，缓解了入风口相邻出风口的倒吸问题，从而验证了数值仿真计算的可靠性。
Abstracts:
［Objective］ With the increasing demand of passengers for air quality and uniform air supply in metro train interiors, it is necessary to study how to improve the uniformity of cleanable air supply in metro vehicles. ［Method］ The airflow organization inside the air supply ducts is simulated numerically by computational fluid dynamics (CFD). The internal structure of the ducts is optimized, and a set of full-size air supply duct is fabricated for air-conditioning and duct matching tests. ［Result & Conclusion］ The overall variation trend of the airflow quantities predicted by numerical simulation is consistent with that of the experimental-measurement results. After adding baffle, the uniformity of air supply significantly improved, with deviations between predicted and test airflow quantities at over 80% outlets within 15%, and the rest between 15% and 20%. Additionally, the issue of air reversal at outlets adjacent to the inlets is alleviated, thereby validating the reliability of the numerical simulation calculations.
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