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| 地铁车空调风道挡板对车厢内温度均匀性的影响 | |
| 引用本文： | 王东屏,周溶溶,韩璐,孔繁冰.地铁车空调风道挡板对车厢内温度均匀性的影响[J].大连交通大学学报,2014,35(5):1-4. |
| 作者姓名： | 王东屏 周溶溶 韩璐 孔繁冰 |
| 作者单位： | 1. 大连交通大学 机械工程学院,辽宁大连,116028 2. 大连交通大学交通运输工程学院,辽宁大连,116028 3. 中国北车集团唐山轨道客车有限责任公司,河北唐山,063035 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 以某地铁中车为研究对象,采用标准的κ-ε湍流模型对空调风道及车厢内部三维空间区域定员230人工况下的空气流动和传热状况进行了数值分析,并对空调通风设计方案做量化评估,计算中综合考虑了车体壁面传热、人体散热等多种传热过程.由计算结果可知,风道第8个出风口有空气逆流现象且车厢内部温度分布不均匀.针对上述缺点,对第8个出风口周围挡板相对位置及数量进行调整.新方案消除了风道出风口逆流现象,车厢内人体舒适区的温度分布均匀性得到改善,温差由原方案的4℃降为2.5℃. |
| 关 键 词： | 地铁车辆 κ-ε湍流模型 数值模拟 风道挡板 |
Air-Conditioning Duct Bafflers Impact on Indoor Temperature Uniformity in Subway Car |
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| WANG Donping,ZHOU Rongrong,HAN Lu,KONG Fanbing.Air-Conditioning Duct Bafflers Impact on Indoor Temperature Uniformity in Subway Car[J].Journal of Dalian Jiaotong University,2014,35(5):1-4. | |
| Authors: | WANG Donping ZHOU Rongrong HAN Lu KONG Fanbing |
| Institution: | WANG Donping, ZHOU Rongrong, HAN Lu, KONG Fanbing (1. School of Mechanical Engineering, Dalian Jiaotong University, Dalian 116028, China; 2. School of Traffic and Transportation Engineering, Dalian Jiaotong University, Dalian 116028, China ; 3. CNR Tangshan Railway Vehicle Co. , Ltd, Tangshan 063035, China) |
| Abstract: | A subway medium car is taken as a research object,standard k-~ turbulence model is used,and nu- merical analysis is carried out for the air flow and heat transfer conditions of the air-conditioning duct and three-dimensional space of the interior car with a capacity of 230 people. Assessment of the air conditioning and ventilation design was conducted, considering the car-body wall heat transfer, the body heat and other heat transfer process. The calculation results show that there is air counter-flow phenomenon in the eighth outlet and uneven distribution of temperature interior. Response to these shortcomings, the baffler location and number around the eighth outlet are adjusted. The new project remove the air counter-flow phenomenon, and improve the distribution of the temperature with a reduced temperature range from 4 to 2.5 ℃. |
| Keywords: | subway vehicle k-ε turbulence model numerical simulation duct bafflers |
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