基于数值模拟的高速列车设备舱温度场分析英文.doc

Available online at ScienceDirect ocrePdia Engineering 121 (01)25 5941 – 1961 9th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC) and the 3rd International Conference on Building Energy and Environment (COBEE) Analysis of high speed train equipment cabin temperature field based on numerical simulation Qiong Jia , Jianbin Zang , Deng Pan , Chunjing Xia , Jun Xu , and Naiping Gao * a a b c c a, a School of Mechanical Engineering, Tongji University, Shanghai 200092, China Shenzhen Institute of Building Research Co. Ltd, Shenzhen 518033, China China CNR Changchun Railway Vehicles Co. Ltd, Changchun 130062, China b c Abstract In order to investigate the ventilation performance in the equipment cabin of a high-speed railway train, this paper uses computational fluid dynamics (CFD) method to simulate the air flow and temperature field in indoor and outdoor space of the cabin when the train moves at 250 km/s in open space. The maximum average surface temperature of the heat generation equipment is 56.5 oC. The results of this study provide suggestions for the arrangement of the equipment, the design of the ventilating grilles, and selection of fans for the equipment cabin of the high-speed railway train. ? 2015 The Authors. Published by Elsevier Ltd. ? 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (Peer-review/licenses/bofy-nthec-ndorganizing/4.0/). committee of ISHVACCOBEE 2015. Peer-review under responsibility of the organizing committee of ISHVAC-COBEE 2015 Keywords: High-speed train; Equipment cabin; Numerical simulation; Temperature field Nomenclature ρ t u density time velocity vector ΓΦ SΦ diffusivity of variable Φ the source item o