| 陈亭西,张中波,陈云鹏.民机客舱内流场中锂电池燃烧烟气的扩散仿真分析[J].火灾科学,2026,35(1):40-49. |
| 民机客舱内流场中锂电池燃烧烟气的扩散仿真分析 |
| Simulation analysis of lithium battery combustion smoke diffusion in civil aircraft cabin airflow field |
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| DOI：10.3969/j.issn.1004-5309.2026.01.05 |
| 基金项目:中国民用航空飞行学院科研项目(BSJ2022-5);中国民用航空飞行学院研究生创新基金项目(24CAFUC10205) |
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| 中文关键词: 民机客舱 CO烟气 锂电池燃烧 CFD仿真 火灾消防 |
| 英文关键词:Civil aviation cabin CO smoke Lithium battery combustion Computational Fluid Dynamics (CFD) simulation Fire protection and firefighting |
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| 中文摘要: |
| 建立了五排窄体客舱模型,基于CFD仿真分析了在不同的客舱送风量下、锂电池在不同位置发生燃烧时,烟气在客舱内流场中的扩散规律,对比了乘客呼吸区域CO浓度变化差异。结果表明,随着送风量的增加,客舱中部的下洗流对烟气的阻挡作用越明显,同时内流场的湍流涡聚集效应越强,烟气主要在着火侧座舱内扩散,不易扩散至另一侧座舱;同时,各探测点CO浓度下降得更快,客舱前后影响范围也越小,排烟效率更高。中部过道位置发生燃烧时,由于内流场中部下洗流会沿着地板向两边扩散,因此烟气的影响范围更大。而非过道位置发生的燃烧,部分探测点CO会出现较高的峰值,但扩散范围更小。 |
| 英文摘要: |
| A five-row narrow-body cabin model has been established, and Computational Fluid Dynamics (CFD) simulations have been conducted to analyze the diffusion patterns of smoke within the cabin airflow field when lithium batteries have combusted at different locations under varying cabin airflow rates. The disparities in CO concentration within the passenger breathing zones have been compared. The results indicate that, with increasing airflow rates, the obstructive effect of mid-cabin downwash airflow on smoke becomes more pronounced, while the aggregation effect of turbulent eddies within the internal airflow field is strengthened. Consequently, smoke has primarily diffused within the cabin on the ignition side, with limited propagation to the opposing cabin side. Additionally, the CO concentrations at various detection points have decreased more rapidly, resulting in reduced impact spans fore and aft within the cabin and enhanced smoke evacuation efficiency. When combustion occurs in mid-aisle positions, the lateral spread of downwash airflow along the cabin floor has expanded the smoke influence range. Conversely, combustion events in non-aisle positions may have resulted in elevated peak CO concentrations at select detection points, albeit with limited diffusion extents. |
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