Numerical study of the influence of the atmospheric pressure on the thermal environment in the passenger cabin
作者机构：Tianjin Key Lab.of Indoor Air Environmental Quality ControlSchool of Environmental Science and EngineeringTianjin UniversityTianjin300072China Shanghai Aircraft Design and Research InstituteJinke RoadPudong DistrictShanghai201210China
出 版 物：《Building Simulation》 (建筑模拟（英文）)
年 卷 期：2024年第17卷第2期
页 面：253-265页
核心收录：
学科分类：08[工学] 0807[工学-动力工程及工程热物理] 082501[工学-飞行器设计] 0814[工学-土木工程] 0825[工学-航空宇航科学与技术]
主 题：low pressure aircraft cabin simulation heat dissipation convective heat transfer coefficient
摘 要：The cabin air pressure remains lower than the horizontal atmospheric pressure when the airplane is in *** pressure is one of the parameters that must be taken into consideration while studying the thermal environment of an airplane *** are still no reference values for aircraft cabins despite the fact that numerous studies on low pressure heat transfer have demonstrated the connection between convective heat transfer coefficient(CHTC)and air *** this paper,a correction method for CHTC under low pressure conditions was established by using the dummy heat dissipation in the low-pressure cabin *** this basis,a thermal environment simulation model was developed,then was applied to the simulation of a seven-row aircraft cabin containing 42 passengers,and the CHTC and heat loss of dummy surface in the cabin were ***,the results of PMV calculated by using heat dissipation and air parameters at sampling points were *** results show that the modified CHTC can accurately reflect the cabin thermal environment under low pressure conditions,and the correction of CHTC can be realized by adjusting the turbulent Prandtl number,which is nonlinear correlated with the *** simulation results of the thermal environment in the seven-row cabin show that the CHTC changes by about 42%before and after *** air pressure decreases during take-off,which reduces the average CHTC of the crew surface from 5.09 W/(m^(2)·K)to 4.56 W/(m^(2)·K),but the air temperature rises by about 0.2°C as a *** deviation of PMV results calculated by using simulated heat loss data and using air parameters of measuring points in space is up to 0.5,but the latter is representative for calculating the thermal comfort level of the whole cabin.
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