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RP-3航空燃油中CO2扩散系数实验分析

李超越 冯诗愚 邵垒 潘俊 刘卫华

李超越, 冯诗愚, 邵垒, 等 . RP-3航空燃油中CO2扩散系数实验分析[J]. 北京航空航天大学学报, 2018, 44(4): 765-771. doi: 10.13700/j.bh.1001-5965.2017.0265
引用本文: 李超越, 冯诗愚, 邵垒, 等 . RP-3航空燃油中CO2扩散系数实验分析[J]. 北京航空航天大学学报, 2018, 44(4): 765-771. doi: 10.13700/j.bh.1001-5965.2017.0265
LI Chaoyue, FENG Shiyu, SHAO Lei, et al. Experimental analysis of carbon dioxide diffusion coefficient in RP-3 jet fuel[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(4): 765-771. doi: 10.13700/j.bh.1001-5965.2017.0265(in Chinese)
Citation: LI Chaoyue, FENG Shiyu, SHAO Lei, et al. Experimental analysis of carbon dioxide diffusion coefficient in RP-3 jet fuel[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(4): 765-771. doi: 10.13700/j.bh.1001-5965.2017.0265(in Chinese)

RP-3航空燃油中CO2扩散系数实验分析

doi: 10.13700/j.bh.1001-5965.2017.0265
基金项目: 

航空科学基金 20132852040

江苏省研究生科研与实践创新计划项目 KYCX17_0279

中航工业技术创 2014D60931R

民用飞机专项科研经费 [2016]37

中央高校基本科研业务费专项资金 

江苏高校优势学科建设工程基金 

详细信息
    作者简介:

    李超越  男, 博士研究生。主要研究方向:飞机燃油箱惰性化技术

    冯诗愚  男, 博士, 副教授。主要研究方向:油箱惰性化和飞机燃油系统

    通讯作者:

    冯诗愚, E-mail: shiyuf@nuaa.edu.cn

  • 中图分类号: V312;TQ021.4

Experimental analysis of carbon dioxide diffusion coefficient in RP-3 jet fuel

Funds: 

Aeronautical Science Foundation of China 20132852040

Postgraduate Research & Practice Innovation Program of Jiangsu Province KYCX17_0279

Technology Innovation Foundation of AVIC 2014D60931R

Special Research Foundation of Civil Aircraft [2016]37

the Fundamental Research Funds for the Central Universities 

Priority Academic Program Development of Jiangsu Higher Education Institutions 

More Information
  • 摘要:

    CO2在航空燃油中的质量扩散规律对飞机油箱惰化系统的研究极其重要。搭建压力降法实验装置测量CO2在RP-3航空燃油中的扩散系数,实验测试了-20、0、20、40和60℃恒温条件下的CO2气相空间压力随时间变化关系。根据Fick定律建立了容器中二维扩散方程,并采用数值解法,设定扩散系数值,求解气体在航空燃油中的浓度分布,根据质量守恒和实际气体状态方程可得到CO2气相空间压力,并与实验记录的气体压力进行比较。以扩散系数为自变量,推导了实验与理论计算误差函数,并采用Husain单一变量搜索法,使误差函数值最小,可得到扩散系数最优解。研究还显示CO2在RP-3航空燃油中的扩散系数随温度升高而增大,满足Arrhenius方程。

     

  • 图 1  压力降法实验装置图

    Figure 1.  Schematic diagram of pressure-decay experiment apparatus

    图 2  扩散模型示意图

    Figure 2.  Schematic diagram of diffusion model

    图 3  CO2-RP-3燃油体系不同温度下压力平均误差随扩散系数变化关系

    Figure 3.  Variation of average pressure differencewith diffusion coefficient under different temperature for CO2-RP-3 jet fuel system

    图 4  计算压力降与实验数据比较

    Figure 4.  Comparison of calculated pressure decay with experimental data

    图 5  扩散系数随温度变化关系

    Figure 5.  Relationship between diffusion coefficient and temperature

    图 6  实验测量不同时刻压力变化

    Figure 6.  Experimental measurement of variation of pressure versus time

    表  1  扩散系数最优解

    Table  1.   Optimum solution of diffusion coefficient

    T/℃ Δpave, min/kPa D/(10-8m2·s-1)
    -20 5.89 6.1
    0 3.87 7.6
    20 5.35 8.6
    40 4.98 9.7
    60 3.59 11.1
    下载: 导出CSV
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出版历程
  • 收稿日期:  2017-04-27
  • 录用日期:  2017-08-31
  • 网络出版日期:  2018-04-20

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