Journal article
Numerical study of the air flow through an air-conditioning unit on high-speed trains
Journal of wind engineering and industrial aerodynamics, v 187
Apr 2019
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The air-conditioning units (ACUs) on high-speed trains are responsible for cooling the passenger compartment. Insufficient condensing air flux through the ACU may lead to a suboptimal cooling and causes dangerous levels of overheating or even a shutdown of the ACU itself. In this paper, the air flow through ACU at different speeds of a high-speed train is investigated numerically. A significant drop of the condensing air flux during the train operation at higher speed is observed. This phenomenon is related to the interaction of the air flow through the ACU and the boundary layer on the roof of the train. Simulations show that the motion of the train creates a region of negative pressure above the ACU inlets and a region of positive pressure above the outlets. Thus, a particular structural optimization of the air outlets aimed at reducing the pressure buildup is proposed. The proposed numerical method can be used serve to investigate and to optimize the performance the ACUs on high-speed trains under different structural modifications.
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Details
- Title
- Numerical study of the air flow through an air-conditioning unit on high-speed trains
- Creators
- Xueliang Li - Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, Hunan, ChinaFan Wu - Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha, 410075, Hunan, ChinaYu Tao - EY TechnologiesMingzhi Yang - EY TechnologiesRobert Newman - Drexel UniversityDmitri Vainchtein - Drexel University
- Publication Details
- Journal of wind engineering and industrial aerodynamics, v 187
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- C. and J. Nyheim Plasma Institute
- Web of Science ID
- WOS:000460536100003
- Scopus ID
- 2-s2.0-85061162072
- Other Identifier
- 991019169119104721
UN Sustainable Development Goals (SDGs)
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Engineering, Civil
- Mechanics