Simulation analysis of combustion and explosion hazards of aviation fuel in cabin

YANG Manjiang; DONG Zhangqiang; HU Yangyang; WU Hongmei; LIU Lijuan

doi:10.11883/bzycj-2022-0240

Volume 43 Issue 4

Apr. 2023

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YANG Manjiang, DONG Zhangqiang, HU Yangyang, WU Hongmei, LIU Lijuan. Simulation analysis of combustion and explosion hazards of aviation fuel in cabin[J]. Explosion And Shock Waves, 2023, 43(4): 045402. doi: 10.11883/bzycj-2022-0240

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Simulation analysis of combustion and explosion hazards of aviation fuel in cabin

doi: 10.11883/bzycj-2022-0240

1.
China Ship Development and Design Center, Wuhan 430064, Hubei, China
2.
School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, Hubei, China

Received Date: 2022-06-02
Rev Recd Date: 2022-11-09

Available Online: 2022-11-14

Publish Date: 2023-04-05

Abstract

Abstract

With the rapid development of air transportation, the safe usability of aviation fuel is extremely important. However, during the storage, transportation and use of aviation fuel, it is very easy to form steam because of its good fluidity and volatility. In case of leakage, it will quickly form a flammable mixture with the air in the cabin, and combustion and explosion accidents may occur in case of fire source, while the combustion and explosion parameters of aviation fuel may vary in different compartment structures. In order to understand and grasp the hazard of aviation fuel combustion and explosion in different structural cabins, a numerical simulation study on aviation fuel vapor combustion and explosion in various structural aviation fuel cabins is conducted by using CFD (computational fluid dynamics). The results show that when the premixed deflagration of aviation fuel vapor occurs in the closed aviation fuel cabin, the pressure changes are more uniform, the flame surface is spherical diffusion, and the combustion reaction mainly occurs on the flame surface. Under the conditions of this numerical simulation, the maximum combustion and explosion pressures of aviation fuel in the closed compartment without partition and the closed compartment with incomplete partition are 0.76 MPa and 0.74 MPa, respectively; that is, the special structures such as incomplete partition in the compartment have no significant effect on the maximum pressure generated by aviation fuel combustion and explosion. The existence of special structures such as diaphragms makes the air flow vortex in the cabin, increases the fuel consumption rate, and increases the propagation speed and pressure rise rate of the flame surface. The change of temperature distribution is highly consistent with the propagation process of the flame surface, while the combustion reaction mainly occurs on the flame surface. The mass fraction of fuel in the cabin is determined by the flame surface.
- aviation fuel,
- cabin structure,
- explosion parameters,
- computational fluid dynamics

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References

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