气体分配方式对多隔仓燃油箱地面惰化的影响

冯晨曦; 刘卫华; 鹿世化; 冯诗愚

气体分配方式对多隔仓燃油箱地面惰化的影响

基金项目: 航空科学基金(50306017); 南京航空航天大学引进人才科研基金(S1030-014)

计量
- 文章访问数: 1890
- HTML浏览量: 123
- PDF量: 42
- 被引次数: 0
出版历程
- 收稿日期: 2010-12-02
- 修回日期: 2011-03-05
- 刊出日期: 2011-11-28

Study on ground-based inerting process influenced by different gas distribution for multi-bay fuel tank

摘要

摘要: 在各仓温度和压力为定常边界条件下,采用数值积分法,建立多仓燃油箱冲洗的数值模型,应用波音747中央翼燃油箱,通过将计算结果与国外文献中公布的实验数据进行比较,验证了模型具有较高的计算精度;然后,选择波音737中央翼燃油箱作为研究对象,采用惰化气体均匀和非均匀两种分配方式,在惰化气体流量按体积和数量两种分配方式下,计算出各隔仓氧气体积分数随时间及换气次数的变化关系,结果表明:要使各隔仓均惰化至目标氧气体积分数,按体积分配富氮气体的均匀进气方式所需的惰化时间最短,按数量分配的均匀进气方式所需的时间最长;由左舷、中弦、右弦整体平均氧气体积分数随换气次数的变化,可知非均匀进气方式优于均匀进气方式.
- 燃油惰化 /
- 冲洗 /
- 燃油箱 /
- 多隔仓 /
- 气体分配
Abstract: Under the constant temperature and pressure boundary conditions,a mathematical model of fuel washing was established based on the numerical integration method.Firstly,the validity of the model was verified by comparing the calculated results obtained from the model of Boeing 747 with the experimental data published in foreign literatures,showing good agreement of the results.Secondly,the model of Boeing 737 central wing fuel tank was chosen as a research objective,the inerting gas was distributed by uniform and non-uniform ways;when the flow of inerting gas was distributed by volume and quantity ways,the changes of oxygen concentration with time and volumetric tank exchange (VTE) were calculated.The results shows that,when inerting is completed,uniform inlet with nitrogen-rich air distributed by volume costs the shortest inerting time,and uniform inlet with nitrogen-rich air distributed by quantity costs the longest inerting time.The comparison between changes of left side,right side and center in overall average oxygen concentration with VTE shows that non-uniform inlet is better than uniform inlet.
- fuel inerting /
- washing /
- fuel tank /
- multi bays /
- gas distribution

HTML

参考文献(12)

[1]	William M C.The effect of fuel on an inert ullage in a commercial transport airplane fuel tank .Washington,DC,USA:Office of Aviation Research,DOT/FAA/AR-05/25.2005.
[2]	肖再华.飞机燃油箱惰化[J].航空科学技术,2005,17(1):31-32. XIAO Zaihua.Inerting of aircraft fuel tank[J].Aerospace Science and Technology,2005,17(1):31-32.(in Chinese)
[3]	William M C.Measuring oxygen concentration in a fuel tank ullage[J].AIAA 2009-1743,2009.
[4]	王小平,肖再华.飞机燃油箱氮气惰化的机理分析及应用[J].航空科学技术,2008,20(6):24-26. WANG Xiaopin,XIAO Zaihua.Fundamentally analysis on inerting of aircraft fuel tank with nitrogen-enriched air and its application [J].Aerospace Science and Technology,2008,20 (6):31-32.(in Chinese)
[5]	刘小芳,刘卫华.飞机供氧和燃油箱惰化技术概况[J].北华航天工业学院学报,2008,18(3):4-7. LIU Xiaofang,LIU Weihua.Outline of airborne oxygen supplied and its fuel tanks inerted[J].Journal of North China Institute of Aerospace Engineering,2008,18(3):4-7.(in Chinese)
[6]	Michael B,William M C,Richard H,et al.Flight-testing of the FAA onboard inert gas generation system on an airbus A320 .Atlantic City,New Jersey,USA:William J Hughes Technical Center,DOT/FAA/AR-03/58,2004.
[7]	Michael B,William M.C.Ground and flight testing of a Boeing 737 center wing fuel tank inerted with nitrogen-enriched air .Washington,DC,USA:Office of Aviation Research,DOT/FAA/AR-01/63,2001.
[8]	高秀峰,刘卫华,熊斌,等.燃油箱冲洗惰化过程理论研究[J].西安交通大学学报,2010,46(9):16-20. GAO Xiufeng,LIU Weihua,XIONG Bin,et al.Theoretical study of washing inerting process in aircraft fuel tank [J].Journal of Xi'an Jiaotong University,2010,46(9):16-20.(in Chinese)
[9]	Michael B,William M C.Inerting of a vented aircraft fuel tank test article with nitrogen-enriched air .Washington,DC,USA:Office of Aviation Research,DOT/FAA/AR-01/6,2001.
[10]	汪明明.飞机燃油箱冲洗与洗涤惰化技术比较分析[J].南京航空航天大学学报,2010,42(5):614-619. WANG Mingming.Comparative analysis of fuel washing and scrubbing in aircraft fuel tank [J].Journal of Nanjing University of Aeronautics and Astronautics,2010,42(5):614-619.(in Chinese)
[11]	汪明明.飞机油箱气相空间氧浓度控制技术的理论研究 .南京:南京航空航天大学,2010. WANG Mingming.Theoretical study of control technology of oxygen concentration on aircraft fuel tank ullage .Nanjing:Nanjing University of Aeronautics and Astronautics,2010.(in Chinese)
[12]	William M C,Ole K.Inerting a Boeing 747sp center wing tank scale model with nitrogen- enriched air .Washington,DC,USA:Office of Aviation Research,DOT/FAA/AR-02/51,2002.