面向燃油结冰试验的饱和燃油制备数值模拟  

Numerical simulation of saturated fuel preparation for fuel icing tests

作　　者：彭炬 谷云凤 李杰 刘林盛 夹福年 杨锦昌 王彬[2] PENG Ju;GU Yunfeng;LI Jie;LIU Linsheng;JIA Funian;YANG Jinchang;WANG Bin(Sichuan Gas Turbine Establishment,Aero Engine Corporation of China,Mianyang Sichuan 621703,China;College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]中国航发四川燃气涡轮研究院,四川绵阳621703 [2]南京航空航天大学能源与动力学院,南京210016

出　　处：《航空动力学报》2024年第11期486-493,共8页Journal of Aerospace Power

基　　金：中国航发四川燃气涡轮研究院稳定支持项目(GJCZ-2021-0043)。

摘　　要：为研究燃油结冰试验中饱和燃油含水量的影响规律,以达到适航标准要求的油水均匀度,提出对配水循环系统进行数值模拟。运用欧拉-拉格朗日法分别表示连续项与离散项,用离散相模型(discrete phase model,DPM)模拟水粒子的碰撞、融合和破碎。对液滴喷射与水-燃油两相流循环进行仿真计算,研究注水位置、循环泵后压力及液流进出排布对燃油含水量的影响规律。基于循环系统内不同区域离散项质量浓度的取样统计,分析适航标准规定时间内水与燃油混合情况。利用燃油配水装置进行了泵压式循环注水试验,实测不通过油水分离器循环的泵后燃油含水量。结果表明:测量结果与数值模拟基本吻合,液流进出口设于油箱同侧且在泵后管路注水时循环掺混效果好。0.2 MPa泵后压力时油水混合均匀,且含水量可保持在适航标准规定的90×10^(-6)~130×10^(-6)范围内。In order to study the influence rules of water content in saturated fuel for fuel icing tests,and find the way to meet airworthiness requirement on fuel-water homogeneity,numerical simulation of water injection and circulation system was proposed.Euler-Lagrange algorithm represented continuous and discrete terms respectively,and discrete phase model(DPM)simulated the collision,fusion and fragmentation of water particles.Water droplet spray and water-fuel two-phase flow cycle was simulated,to examine effects of injection position,pressure of the pump outlet and in/out arrangement of fluid on the water content in the fuel.Based on statistical sampling on the mass concentration of the discrete terms for different regions in the cycle system,water-fuel mixing within the prescribed time by the airworthiness standard was analyzed.Water injection experiment for the fuel cycle was conducted by using water distribution apparatus,and the water content in the cycle fuel without passing through the fuel-water separator was measured.The results showed that,the measured results were in good agreement with the numerical simulation.The circulating mixing exhibited excellent effect when the inlet and the outlet of the liquid flow were on the same side of the tank or water was injected into the downstream pipe of the pump.Moreover,fuel-water mixing was uniform at 0.2 MPa pump outlet pressure,and stable water content was kept within the range of 90×10^(−6) to 130×10^(−6) specified by the airworthiness standard.

关 键 词：燃油结冰 含水量 离散项 管路布局 泵后压力 

分 类 号：V233.2[航空宇航科学与技术—航空宇航推进理论与工程]