飞机油箱中燃油温度变化数值仿真

王立群; 范菊莉; 刘冠男; 刘豪正; 王洋洋; 冯诗愚

doi:10.13224/j.cnki.jasp.20220105

飞机油箱中燃油温度变化数值仿真

doi: 10.13224/j.cnki.jasp.20220105

1.
南京航空航天大学航空学院飞行器环境控制与生命保障工信部重点实验室，南京 210016
2.
中国航空工业集团有限公司南京机电液压工程研究中心航空机电系统综合航空科技重点实验室，南京 211106

基金项目: 国家自然科学基金委员会-中国民用航空局民航联合研究基金（U1933121）；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；南京航空航天大学研究生科研与实践创新计划项目（xcxjh20210108）

详细信息

作者简介:
王立群（1996-），男，硕士生，主要从事冷却惰化研究

通讯作者:
冯诗愚（1974-），男，副教授，博士后，主要研究油箱惰化。E-mail：shiyuf@nuaa.edu.cn

中图分类号: V228.1
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- 被引次数: 0
出版历程
- 收稿日期: 2022-03-04
- 网络出版日期: 2023-01-13

Numerical simulation of fuel temperature change in aircraft fuel tank

1.
Key Laboratory of Aircraft Environmental Control and Life Support Industry and Information Technology，College of Aerospace Engineering， Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China
2.
Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration，Nanjing Engineering Institute of Aircraft Systems， Aviation Industry Corporation of China Limited，Nanjing 211106，China

摘要

摘要:
在考虑飞行中外界空气对蒙皮气动加热的情况下，对飞机油箱内部燃油和气体的传热过程进行了三维仿真，得到了油箱中温度场和速度场的分布，采用集总参数法建立了飞机油箱一维热模型，通过Modelica语言编程对其进行了求解。将三维模型和一维模型计算得到的燃油、气相空间及壁面温度与飞行实验数据进行了对比，结果显示两种模型气相和燃油平均温度均与布置在油箱中部的传感器测量结果吻合较好，但是三维仿真结果表明油箱各处温度差异很大，燃油各点温差最大可达17 K，气相空间各点温差最大可达30 K。因此实验中传感器位置需要重点关注。此外，三维仿真模型还可为一维模型中相关换热参数选择提供依据。
- 油箱 /
- 热模型 /
- 燃油温度 /
- 集总参数法 /
- 惰化
Abstract:
Considering aerodynamic heating of the skin by the outside air during flight, a three-dimensional simulation of the heat transfer process of fuel and gas inside the aircraft fuel tank was carried out, and the distribution of the temperature field and velocity field in the fuel tank was obtained. The lumped parameter method was used. A one-dimensional thermal model of aircraft fuel tank was established, and solved by programming in Modelica language. The fuel, gas space and wall temperatures calculated by the three-dimensional model and the one-dimensional model were compared with the flight test data. The results showed that the average gas and fuel temperatures of the two models were in good agreement with the measurement results of the sensors arranged in the middle of the fuel tank. The three-dimensional simulation results indicated that the temperature of the fuel tank varied greatly. The maximum temperature difference between each point of the fuel can reach 17 K, and the maximum temperature difference between each point in the gas phase space can reach 30 K, so due attention shall be paid to the sensor position in the test. In addition, the three-dimensional simulation model can also provide a basis for the selection of relevant heat transfer parameters in the one-dimensional model.
- fuel tank /
- thermal model /
- fuel temperature /
- lumped parameter method /
- inerting

HTML

图 1 油箱几何模型

Figure 1. Geometric model of fuel tank

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图 2 仿真及实验的飞行包线

Figure 2. Flight envelope of simulation and test

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图 3 网格无关性验证

Figure 3. Grid independence verification

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图 4 油箱网格图

Figure 4. Fuel tank grid

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图 5 流场烟可视化图^[19]

Figure 5. Visualization of smoke flow field^[19]

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图 6 仿真流线图

Figure 6. Simulation streamline diagram

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图 7 油箱对流换热关系示意图

Figure 7. Schematic diagram of convective heat transfer relationship of fuel tank

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图 8 油箱温度云图（t=6750 s）

Figure 8. Fuel tank temperature nephogram （t=6750 s）

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图 9 空气流线图（t=6750 s）

Figure 9. Air streamline diagram （t=6750 s）

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图 10 油箱温度云图（t=14500 s）

Figure 10. Temperature nephogram of fuel tank （t=14500 s）

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图 11 燃油温度和气相空间温度对比

Figure 11. Comparison of fuel temperature and gas phase space temperature

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图 12 三维仿真中燃油各点温度对比

Figure 12. Comparison of fuel temperature in three-dimensional simulation

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图 13 油箱气相空间温度仿真结果对比

Figure 13. Comparison of simulation results of gas phase space temperature of fuel tank

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表 1 网格无关性验证

Table 1. Grid independence verification

网格数量/10⁴ 5 7 10 15

温度/K 237.0 247.2 254.6 253.8

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