熔融铝液遇水爆炸及碎化过程模拟研究Numerical Simulation of Explosion and Fragmentation Process in Molten Aluminum-water Interactions
唐文博,何向问,马书志,王正易达,毛力,彭泽军,黄楚原,刘丽娟,陈先锋
摘要(Abstract):
为探究熔融铝液遇水爆炸机理,基于CFD方法开展了数值模拟研究。构建了熔融铝液泄漏模型,采用VOF多相流方法耦合水的相变与传热传质过程,模拟了熔融铝液入水后碎化及蒸汽爆炸过程,分析了铝液碎化规律及爆炸压力和温度特性。结果表明:铝液碎化受水力和热力效应协同作用,碎化增大了铝液与水的换热面积,产生大量水蒸气并引发蒸汽爆炸,爆炸过程呈现“水力主导变形—热力驱动碎化—蒸汽爆炸”的连锁机制;监测点处产生两次压力峰值,证实碎化引发的换热增强是蒸汽爆炸的关键因素;熔融铝液遇水过程的温度分布呈阶段性动态变化。本研究系统模拟了熔融铝液遇水碎化及导致蒸汽爆炸的演化过程,为提升铝加工行业安全防控水平提供了理论与技术支撑。
关键词(KeyWords): 熔融铝液;蒸汽爆炸;VOF方法;碎化特性;相变
基金项目(Foundation): 国家自然科学基金(52274224);; 中铝国际重点科研项目(01032025017001);; 湖北省自然科学基金计划(创新群体项目)(2023AFA013)~~
作者(Author): 唐文博,何向问,马书志,王正易达,毛力,彭泽军,黄楚原,刘丽娟,陈先锋
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