Numerical Simulation and Research on Flow Characteristics of Fan in the Ventilation System of Airliners
Fan is an important part of aircraft ventilation system, and its working condition is of an important influence on the normal operation of environmental control system. Taking a fan as the research object, under the condition of variable flow rate, the parameters of fan efficiency, pressure rise, po...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Advances in Aeronautical Science and Engineering
2019-12-01
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| Series: | Hangkong gongcheng jinzhan |
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| Online Access: | http://hkgcjz.cnjournals.com/hkgcjz/article/abstract/2019131?st=article_issue |
| _version_ | 1811312244868251648 |
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| author | Zhao Yushu |
| author_facet | Zhao Yushu |
| author_sort | Zhao Yushu |
| collection | DOAJ |
| description | Fan is an important part of aircraft ventilation system, and its working condition is of an important influence on the normal operation of environmental control system. Taking a fan as the research object, under the condition of variable flow rate, the parameters of fan efficiency, pressure rise, power and so on are calculated by numerical simulation method, and the changing trend is analyzed. Combined with the limit streamline diagram and the spatial vorticity diagram, the flow field of the fan under different flow rates and the effect of different flow structures on efficiency are analyzed. The calculation and analysis show that the total pressure efficiency will increase with the increase of flow rate in a certain range, and when the flow rate reaches a certain value, the increase of flow rate will sharply reduce the efficiency. In addition, the change of flow leads to the change of static pressure on the blade surface and aerodynamic force on the fan. At low flow rate, there is a lowest point of aerodynamic force on the impeller. In a given flow range, the vortex structure in the flow field will also change with the flow, which is mainly due to the change of the angle of attack caused by the change of the flow. |
| first_indexed | 2024-04-13T10:33:58Z |
| format | Article |
| id | doaj.art-6c9eff41f2a04a0db2f30ef4925dcafb |
| institution | Directory Open Access Journal |
| issn | 1674-8190 |
| language | zho |
| last_indexed | 2024-04-13T10:33:58Z |
| publishDate | 2019-12-01 |
| publisher | Editorial Department of Advances in Aeronautical Science and Engineering |
| record_format | Article |
| series | Hangkong gongcheng jinzhan |
| spelling | doaj.art-6c9eff41f2a04a0db2f30ef4925dcafb2022-12-22T02:50:07ZzhoEditorial Department of Advances in Aeronautical Science and EngineeringHangkong gongcheng jinzhan1674-81902019-12-0110687388010.16615/j.cnki.1674-8190.2019.06.01920190619Numerical Simulation and Research on Flow Characteristics of Fan in the Ventilation System of AirlinersZhao Yushu0AVIC Jincheng Nanjing Engineering Institute of Aircraft System, Nanjing 211100, ChinaFan is an important part of aircraft ventilation system, and its working condition is of an important influence on the normal operation of environmental control system. Taking a fan as the research object, under the condition of variable flow rate, the parameters of fan efficiency, pressure rise, power and so on are calculated by numerical simulation method, and the changing trend is analyzed. Combined with the limit streamline diagram and the spatial vorticity diagram, the flow field of the fan under different flow rates and the effect of different flow structures on efficiency are analyzed. The calculation and analysis show that the total pressure efficiency will increase with the increase of flow rate in a certain range, and when the flow rate reaches a certain value, the increase of flow rate will sharply reduce the efficiency. In addition, the change of flow leads to the change of static pressure on the blade surface and aerodynamic force on the fan. At low flow rate, there is a lowest point of aerodynamic force on the impeller. In a given flow range, the vortex structure in the flow field will also change with the flow, which is mainly due to the change of the angle of attack caused by the change of the flow.http://hkgcjz.cnjournals.com/hkgcjz/article/abstract/2019131?st=article_issueoblique flow fanflow characteristicairliner |
| spellingShingle | Zhao Yushu Numerical Simulation and Research on Flow Characteristics of Fan in the Ventilation System of Airliners Hangkong gongcheng jinzhan oblique flow fan flow characteristic airliner |
| title | Numerical Simulation and Research on Flow Characteristics of Fan in the Ventilation System of Airliners |
| title_full | Numerical Simulation and Research on Flow Characteristics of Fan in the Ventilation System of Airliners |
| title_fullStr | Numerical Simulation and Research on Flow Characteristics of Fan in the Ventilation System of Airliners |
| title_full_unstemmed | Numerical Simulation and Research on Flow Characteristics of Fan in the Ventilation System of Airliners |
| title_short | Numerical Simulation and Research on Flow Characteristics of Fan in the Ventilation System of Airliners |
| title_sort | numerical simulation and research on flow characteristics of fan in the ventilation system of airliners |
| topic | oblique flow fan flow characteristic airliner |
| url | http://hkgcjz.cnjournals.com/hkgcjz/article/abstract/2019131?st=article_issue |
| work_keys_str_mv | AT zhaoyushu numericalsimulationandresearchonflowcharacteristicsoffanintheventilationsystemofairliners |