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This study employed numerical simulation to establish a fuel–air-thermal flow coupling model, analyzing multiphysics interactions in typical lubricating oil tank fire scenarios. ANSYS ICEM CFD was utilized for mesh generation, with grid independence verification confirming the optimal configuration. Boundary conditions included velocity inlet, pressure outlet, and turbulence parameters, employing the Realizable k-ε turbulence model and non-premixed combustion model for simulation. Results showed a maximum flame temperature of 1996 K, with significant spatial variations in outer wall temperature, while shielding effects reduced temperatures by 35.8% in certain regions. Inner wall temperature distributions remained consistent under static and dynamic refueling conditions, though dynamic refueling introduced a distinct thermal boundary due to oil flow.

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CFD Analysis of Thermal Response in Aircraft Lubricating Oil Tanks During Fire Exposure

  • 会议论文

  • 发表日期：

    2026年

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  • Xinyu Liu,
  • Tai Zeng,
  • Bin Wu,
  • Kai Wang,
  • Haitai Wu,
  • Guolin Li,
  • Fei Xie,
  • Zhengliang Su

摘要

This study employed numerical simulation to establish a fuel–air-thermal flow coupling model, analyzing multiphysics interactions in typical lubricating oil tank fire scenarios. ANSYS ICEM CFD was utilized for mesh generation, with grid independence verification confirming the optimal configuration. Boundary conditions included velocity inlet, pressure outlet, and turbulence parameters, employing the Realizable k-ε turbulence model and non-premixed combustion model for simulation. Results showed a maximum flame temperature of 1996 K, with significant spatial variations in outer wall temperature, while shielding effects reduced temperatures by 35.8% in certain regions. Inner wall temperature distributions remained consistent under static and dynamic refueling conditions, though dynamic refueling introduced a distinct thermal boundary due to oil flow.