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| Study on Personal Ventilation Nozzles Arrangement in Civil Aircraft Passenger Cabin |
| Received:April 23, 2021 Revised:June 09, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.09.007 |
| KeyWord:civil aircraft personal ventilation nozzles arrangement pull-down trunk design index numerical simulation |
| Author | Institution |
| WANG Gang |
COMAC Flight Test Center, Shanghai , China |
| FENG Chao |
COMAC Flight Test Center, Shanghai , China |
| ZHENG Li |
COMAC Flight Test Center, Shanghai , China |
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| Abstract: |
| To obtain the best arrangement scheme of civil aircraft cabin personal ventilation nozzles. For the cabin layout of pull-down trunk compartment, the k-ε model of individual ventilation in single row cabin was established and meshed by ICEM CFD. After sorting out and analyzing the standard manual of personal ventilation at home and abroad, the wind speed at the human head greater than 1 m/s was taken as the design index. Two kinds of nozzle layout schemes were put forward-decentralized arrangement and centralized arrangement. 5 conditions were designed and numerical calculated by FLUENT. For the decentralized layout scheme, the maximum wind speed at the head was only 0.39 m/s under the first condition. While under the second condition, only the passenger in the middle position could obtain the wind speed greater than 1 m/s, the passengers on both sides were basically not blown. For the centralized layout scheme, the maximum wind speed at the head was 0.9 m/s under the third condition, and the maximum wind speed of passenger 1 could only reach 0.52 m/s under the fourth condition. Under the condition of constant personal ventilation, the nozzle diameter was reduced to 20 mm in condition 5, and the wind speed at the head of passenger 1 could reach 1.09 m/s. As an auxiliary adjustment method for the main ventilation system in civil aircraft passenger cabin, the personal ventilation system will relieve the passenger’s hot feeling. For cabins with pull-down trunk, it is difficult to arrange nozzles due to the small space of PSU. According to the calculation results, the decentralized layout cannot meet the needs of the left and right passengers. After the nozzle diameter is reduced to 20 mm, the centralized arrangement can meet the needs of all passengers. At present, this scheme has been applied to the personal ventilation system of a civil aircraft cabin. |
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