混氢天然气可以显著降低二氧化碳和其他有害排放物，推动海事行业向低碳转型。本文通过数值模拟研究障碍物阻塞率和数量对密闭船舱内火焰扩散的影响，分析这些参数对火焰传播结构和爆炸压力的作用。结果表明，火焰传播形态受到障碍物阻塞率和数量的显著影响。最大爆炸压力上升速率随阻塞率和障碍物数量增加而增大，初始压力升高也会使压力峰值和上升速率增加。该研究为混氢LNG动力船舶的设计和安全评估提供了理论依据。
Blended hydrogen natural gas can significantly reduce carbon dioxide and other harmful emissions, driving the maritime industry towards low-carbon transformation. This article studies the influence of obstacle blockage rate and quantity on flame diffusion in a closed cabin through numerical simulation, and analyzes the effects of these parameters on flame propagation structure and explosion pressure. The results indicate that the flame propagation pattern is significantly affected by the blockage rate and number of obstacles. The rate of maximum explosion pressure increase increases with the increase of blockage rate and the number of obstacles, and the initial pressure increase will also increase the peak pressure and rate of increase. This study provides a theoretical basis for the design and safety assessment of hybrid hydrogen LNG powered ships.
2025,47(10): 64-71 收稿日期：2024-8-16
DOI：10.3404/j.issn.1672-7649.2025.10.011
分类号：TD712
基金项目：江苏省工信厅核心技术攻关项目（苏财工贸（2023）60号）
作者简介：闫晨朝（1996-），女，硕士，助理工程师，研究方向为海工装备数字化理论与方法
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