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为解释别墅建筑发生火灾时火灾的蔓延发展和有毒气体的运动,采用大涡模拟(LES)的方法对别墅火灾发生过程进行数值模拟分析,模拟有无水喷淋情况下各楼层火灾烟气运动和毒性气体的流场变化情况。考虑到水喷淋促使烟气量产生的情况,详细分析并对比了有无水喷淋两种工况下烟气运动和毒性气体质量分数的变化。通过分析结果中的烟气速度、密度和CO质量分数等数据,对火灾中提高人员逃生几率提出若干建议。
In order to explain the spread of fire and the movement of noxious gases in the fire of villa buildings, a large eddy simulation (LES) method was used to simulate the fire process of villas and simulate the fire smoke movement And toxic gas flow field changes. Taking into account the water spray to promote the production of flue gas situation, a detailed analysis and comparison of water spray with two conditions of motion and toxic gas mass fraction changes. By analyzing the data of flue gas velocity, density and CO mass fraction in the results, we put forward some suggestions on how to improve the chance of fire escape.