战斗机驾驶舱环境热舒适性仿真与优化

doi:10.7527/S1000-6893.2023.28919

Abstract

Abstract:

The thermal comfort of the fighter cockpit environment is an important factor to ensure the pilot man-machine efficiency and the best combat performance of the fighter. However， the commonly used PMV-PPD human thermal comfort evaluation index cannot be applied to the extremely uneven flow field and temperature field environment in the cockpit， and the thermal comfort of the cockpit environment lacks effective optimization design means. This study first uses STAR-CCM+ and TAITherm software to realize the joint simulation function of air distribution in the cockpit， Fiala human physiological model and Berkeley thermal comfort evaluation model， and then optimizes the human thermal comfort and temperature non-uniformity coefficient. Genetic Algorithm （GA） is used to optimize the flow distribution of multiple air outlets in the cockpit. Compared with the traditional decoupling method， the joint simulation method can effectively improve the calculation accuracy of the skin temperature and thermal comfort of the pilot in the cockpit. Compared with the initial design plan， the temperature non-uniformity coefficient around the human body has improved by 16% after optimization， and the overall thermal comfort has increased by 0.285， accounting for 14% of the quantization scale ladder. Meanwhile， most of the local thermal sensation and thermal comfort of the optimization plan have been improved to varying degrees. Among them， those of the head and neck has improved the most， with the thermal sensation and thermal comfort of the neck increased by 0.55 and 0.781， respectively， accounting for 55% and 39% of the quantization scale ladder， respectively.

Key words: cockpit, thermal comfort, air distribution, fighter, optimiztion of air supply system

CLC Number:

V223⁺.1

Zhongqi LIU, Xuyang HU, Haining LUO, Xiaoming WANG, Sujun DONG. Simulation and optimization of thermal comfort of fighter cockpit environment[J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(7): 128919-128919.

Figures/Tables 18

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序号	送风口位置	个数	单个送风量/（g·s^-1）
1	胸前喷头	2	9.02
2	臂部喷头	2	6.45
3	头部多孔喷管	2	6.99
4	小腿两侧多孔喷管	2	9.57
5	多孔除雾喷管（环形）	1	13.82
6	多孔除雾喷管（直管）	2	6.91

服装层	厚度/mm	热阻/（m²·K·W^-1）	覆盖身体部位
打底上衣	1.270	0.036	颈部、肩膀、双臂、胸部、背部、上腹、头部
打底下衣	1.270	0.036	下腹、双腿
袜子、手套	3.530	0.086	手、足部
皮鞋	2.700	7.407	足部
长袖衬衫	0.530	0.025	颈部、肩膀、双臂、胸部、背部、上腹
长裤	1.880	0.041	下腹、双腿
薄外套	1.727	0.049	颈部、肩膀、双臂、胸部、背部、上腹

序号	送风口位置	质量流量/（g·s^-1）
1	胸前喷头	8.16~11.08
2	臂部喷头	5.68~8.38
3	头部多孔喷管	6.98~9.84
4	小腿两侧多孔喷管	7.89~10.61

流量变化位置	整体热舒适性C		温度不均匀系数μ
流量变化位置	绝对变化量	相对变化量/%	绝对变化量	相对变化量/%
胸前喷头	0.020	0.6	0.000 414	2.1
臂部喷头	-0.012	-0.3	0.000 966	4.8
头部多孔喷管	-0.019	-0.5	-0.000 690	-3.4
小腿两侧多孔喷管	-0.011	-0.3	0.001 380	6.9

序号	送风口位置	供风量/（g·s^-1）
序号	送风口位置	设计值	优化值
1	胸前喷头	9.02	9.02
2	臂部喷头	6.48	6.36
3	头部多孔喷管	6.98	7.06
4	小腿多孔喷管	9.57	10.36
5	多孔除雾喷管（环形）	13.82	13.08
6	多孔除雾喷管（直管）	6.91	6.54

Simulation and optimization of thermal comfort of fighter cockpit environment

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