摘要
当油箱中存在较冷燃油时,加入温暖燃油后会出现不同隔舱间燃油温差较大的情况,因不同隔舱之间燃油的密度及介电常数属性与温度相关,导致差异较大。由于飞机电容式燃油量测量系统的测量精度通常取决于对燃油密度的测量及对介电常数的补偿,所以燃油大温差对油量测量精度有较大影响。本文通过CFD方法模拟飞机地面加油时的燃油大温差现象,在不考虑加入的燃油品质不同的情况下研究燃油温差对油量测量精度的具体影响。
When there is cold fuel oil in the fuel tank,the temperature difference of fuel oil between different compartments will be large after adding warm fuel oil.The density and dielectric constant properties of fuel oil between different compartments are related to temperature,resulting in a large difference.Since the measurement accuracy of the aircraft capacitive fuel quantity measurement system usually depends on the measurement of the fuel oil density and the compensation of the dielectric constant,the large temperature difference of the fuel oil has a great impact on the measurement accuracy of the fuel quantity.In this article,CFD method is used to simulate the phenomenon of large temperature difference of fuel oil when the aircraft is refueled on the ground,and the specific influence of fuel oil temperature difference on the measurement accuracy of fuel quantity is studied without considering the different quality of fuel oil added.
作者
滕叶
李泽园
黎明中
Teng Ye;Li Ze-yuan;Li Ming-zhong(AVIC General Aircraft Huanan Industry Co.Ltd.,Zhuhai 519040,Guangdong Province,China)
出处
《科学与信息化》
2022年第8期98-100,共3页
Technology and Information
关键词
燃油温差
密度
介电常数
油量测量精度
fuel oil temperature difference
density
dielectric constant
fuel quantity measurement accuracy
