飞机燃油箱水污染物数值建模  

Numerical modeling of water contaminants in aircraft fuel tank

作　　者：杨文举 邵垒 刘卫华 贺佳伟[1,2] 陈博涵 YANG Wenju;SHAO Lei;LIU Weihua;HE Jiawei;CHEN Bohan(School of Aeronautics,Chongqing Jiaotong University,Chongqing 400074,China;The Green Aerotechnics Research Institute,Chongqing Jiaotong University,Chongqing 401120,China;College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]重庆交通大学航空学院,重庆400074 [2]重庆交通大学绿色航空技术研究院,重庆401120 [3]南京航空航天大学航空学院,南京210016

出　　处：《北京航空航天大学学报》2024年第11期3578-3586,共9页Journal of Beijing University of Aeronautics and Astronautics

基　　金：重庆市自然科学基金(CSTB2022NSCQ-MSX1301);飞行器环境控制与生命保障工业和信息化部重点实验室开放课题(KLAECLSE-202002);重庆市教委科学技术研究项目(KJQN201900738);重庆交通大学研究生科研创新项目(CYS22435)。

摘　　要：为系统研究初始温度、初始相对湿度、载油率和溶解水相对饱和度对溶解水、冷凝水、析出水和游离水生成量的影响,基于传热传质方程建立水污染物生成模型。研究结果表明:在这4种因素中,初始温度对水污染物生成的影响最大,随着初始温度的增加,冷凝水呈现先减少后增多的趋势,游离水呈现增多的趋势,初始温度310 K生成的游离水较270 K增加了177%;初始相对湿度的影响最小,随着初始相对湿度的增加,冷凝水呈现增多的趋势,初始相对湿度100%时生成0.68 L冷凝水,为初始相对湿度40%时0.619 L的1.1倍;载油率的增加会导致燃油在下降阶段产生“回吸现象”,且随着载油率的增加“回吸现象”加强,冷凝水量呈现减少的趋势,而游离水量呈现增加的趋势,载油率100%时共生成游离水1.009 L,为40%时0.561 L的1.79倍;溶解水相对饱和度的增加会导致析出水量的增多,从而使游离水总量增加,溶解水相对饱和度100%总共生成游离水0.793 L为初始溶解度40%时0.335 L的2.37倍。In order to study the effects of initial temperature,initial relative humidity,fuel load,and relative saturation of dissolved water on dissolved water,condensed water,precipitated water,and free water,this paper established a water contaminant generation model based on the heat and mass transfer equation.The results show that:Among the four factors,the initial temperature has the greatest influence on the formation of water contaminants.With the increase in the initial temperature,the condensed water decreases first and then increases,and the free water increases.The free water generated at the initial temperature of 310 K is 177%higher than that generated at 270 K.The effect of initial relative humidity is the smallest.With the increase in the initial relative humidity,the condensed water shows an increasing trend,and the initial relative humidity of 100%results in a generation of 0.68 L of condensed water,which is 1.1 times 0.619 L generated at the initial relative humidity of 40%.The increase in fuel load will lead to the phenomenon of fuel re-absorption in the descent stage,and with the increase in fuel load,the phenomenon of fuel re-absorption is strengthened.The amount of condensed water shows a decreasing trend,while the free water shows an increasing trend.When the fuel load is 100%,1.009 L of free water is generated,which is 1.79 times 0.561 L generated at the fuel load of 40%.The increase in the relative saturation of dissolved water will lead to an increase in the amount of precipitated water,thus increasing the total amount of free water.The total free water generated at the relative saturation of the dissolved water of 100%is 0.793 L,which is 2.37 times 0.335 L generated at the initial solubility of 40%.

关 键 词：飞机燃油箱 水污染物 初始温度 初始相对湿度 载油率 溶解水相对饱和度 

分 类 号：V312.1[航空宇航科学与技术—航空宇航推进理论与工程]