民用飞机客舱CO<sub>2</sub>分布特性分析

高经诚; 陈维建; 胡万俊; 冯诗愚; 刘豪正

doi:10.13700/j.bh.1001-5965.2021.0683

民用飞机客舱CO₂分布特性分析

doi: 10.13700/j.bh.1001-5965.2021.0683

1.
南京航空航天大学航空学院，南京 210016
2.
四川泛华航空仪表电器有限公司质量管理部，成都 610599

基金项目: 国家自然科学基金 (U1833121)；中央高校基本科研业务费专项资金；江苏高校优势学科建设工程；南京航空航天大学研究生科研与实践创新计划(xcxjh20210108,xcxjh20220102)

详细信息

通讯作者:
E-mail：shiyuf@nuaa.edu.cn

中图分类号: V243
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- 被引次数: 0
出版历程
- 收稿日期: 2021-11-12
- 录用日期: 2022-03-04
- 网络出版日期: 2022-03-23
- 整期出版日期: 2023-10-01

Analysis of CO₂ distribution characteristics in cabin of civil aircraft

1.
School of Aviation，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China
2.
Quality Management Department of Sichuan Fanhua Aviation Instrument Electric Appliance Co.，Ltd.，Chengdu 610599，China

Funds: National Natural Science Foundation of China (U1833121); The Fundamental Research Funds for the Central Universities; Priority Academic Program Development of Jiangsu Higher Education Institutions; Nanjing University of Aeronautics and Astronautics Graduate Research and Practice Innovation Program (xcxjh20210108,xcxjh20220102)

More Information

Corresponding author: E-mail：shiyuf@nuaa.edu.cn

摘要

摘要:
为保证乘客舒适环境与电子设备等正常工作，采用计算流体力学（CFD）方法，对民用飞机座舱内流场进行模拟，通过改变回风和新风温度、巡航高度及回风比，得到不同工况下舱内CO₂体积分数、温度场及速度场分布，并与已有数据对比，验证了计算模型的正确性。研究结果显示：地面标准天及巡航状态舱内流场基本符合要求，冬天供风50 ℃及回风比0.5时，舱内部分区域温度较高，且CO₂体积分数升高并接近标准值，可根据实际需要确定环控系统方案。
- 飞机座舱 /
- CO₂ /
- 计算流体力学 /
- 数值模拟 /
- 民机适航
Abstract:
The interior of civil aircraft cockpit is relatively closed, the air circulation is not smooth, the personnel density is large, and there are organic heat sources such as personnel and electronic equipment. It is essential to have a firm grasp of the flight envelope’s CO₂ concentration, temperature distribution, and air velocity in order to certify civil aircraft as airworthy. The research introduced in this paper uses the computational fluid dynamics (CFD) method to simulate the flow field in the civil aircraft cockpit. The distribution of CO₂ concentration, temperature field, and velocity field in the cockpit under various operating conditions is determined by varying the return air and fresh air temperatures, cruise altitude, and return air ratio. Compared with the existing literature data, the correctness of the calculation model is verified. The research results show that the flow field in the cabin in the ground standard day and cruise state basically meets the requirements. When the air supply is 50 ℃ and the return air ratio is 0.5 in winter, the temperature in some areas of the cabin is higher, and the CO₂ concentration increases and approaches the standard value. The environmental control system scheme can be determined according to the actual needs.
- aircraft cabin /
- CO₂ /
- computational fluid dynamics /
- numerical simulation /
- civil aircraft airworthiness

HTML全文

图 1 座舱几何模型

Figure 1. Geometric model of cabin

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图 2 人椅几何模型

Figure 2. Geometric model of man and chair

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图 3 人椅部分网格划分

Figure 3. Meshing of human and chair

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图 4 整体网格生成

Figure 4. Global mesh generation

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图 5 网格数量19万时CO₂分布

Figure 5. CO₂ distribution when 190 000 grids

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图 6 网格数量370万时CO₂分布

Figure 6. CO₂ distribution when 3 700 000 grids

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图 7 网格数量2300万时CO₂分布

Figure 7. CO₂ distribution when 23 000 000 grids

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图 8 典型切面位置示意图

Figure 8. Schematic diagram of typical section position

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图 9 近壁侧人体中心CO₂对比（地面）

Figure 9. Comparison of carbon dioxide in center of human body near the wall side (ground)

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图 10 过道侧人体中心温度场对比（地面）

Figure 10. Comparison of temperature field of human body center at aisle side (ground)

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图 11 回风口切面速度场对比（地面）

Figure 11. Comparison of sectional velocity field of return air outlet (ground)

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图 12 供风10 ℃时巡航高度人体中心CO₂分布（283 K）

Figure 12. Distribution of CO₂ in center of human body at cruise altitude at 10 ℃ of air supply

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图 13 供风30 ℃时巡航高度人体中心CO₂分布（303 K）

Figure 13. Distribution of CO₂ in center of human body at cruise altitude at 30 ℃ of air supply

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图 14 有回风时人体中心CO₂分布对比（巡航）

Figure 14. Comparison of CO₂ distribution in human body center with return air (Cruise)

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图 15 有回风时人体中心速度场对比（巡航）

Figure 15. Comparison of velocity field of human body center with return air (Cruise)

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图 16 有回风时人体中心温度场对比（巡航）

Figure 16. Comparison of temperature field of human body center with return air (Cruise)

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