摘要
以特定矩形铝制燃油箱为研究对象,建立三维仿真模型,研究不同体积流量下96%的富氮气体(NEA)对油箱冲洗惰化时油箱内氧浓度的变化,仿真结果与文献试验结果对比,两者吻合较好,验证了仿真模型的正确性。在此基础上,研究相同体积流量下,保证惰性气体中氧浓度相同时,不同组分的耗氧惰化混合气体(MIG)对油箱冲洗惰化时油箱内氧浓度的变化规律,结果与文献中NEA试验结果进行比较,分析两种惰化方式对油箱内氧浓度变化的影响。
Taking a specific rectangular aluminum fuel tank as the research object,a three-dimensional simulation model was established to study the change of oxygen concentration in the fuel tank when ullage washing was adopted by the 96%Nitrogen-Enriched Air(NEA)under different volume flow rates.The simulation results and the literature test results are in good agreement with each other and show that this simulation model is correct.On this basis,under the same volume flow rate,when the oxygen concentration in the inert gas is the same,the change rule of oxygen concentration in the fuel tank was studied during the ullage washing,which was adopted by different components of the oxygen consumption inert gas mixture(MIG).The results are compared with the NEA test result in the literature.Compare and analyze the effects of two inerting models on the oxygen concentration change in the fuel tank.
作者
周宇
谷立新
陈广豪
Zhou Yu;Gu Lixin;Chen Guanghao(AVIC Nanjing Engineering Institute of Aircraft Systems,Nanjing 211106,China)
出处
《航空科学技术》
2019年第11期48-52,共5页
Aeronautical Science & Technology
关键词
冲洗
氧浓度变化
富氮气体
混合气体
ullage washing
change of oxygen concentration
NEA
MIG
