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为更好地满足消防部队快速确定危化品泄漏毒害区域的需求,需要优化数值模拟的计算方法,快速确定毒害区域的边界。在开发模拟软件过程中,研究传统危化品泄漏毒害区域模拟软件的计算方法,分析消防部队对模拟软件的需求和毒害气体扩散的一般规律,对传统计算方法进行了优化。传统软件使用等值线法进行模拟,需要计算模拟区域内每个点的浓度或剂量。对传统计算方法优化后,仅需计算临界线附近点的浓度或剂量。该方法能够简化模拟程序的运算,精确模拟毒害区域,满足消防部队划分警戒区域的要求。
In order to better meet the needs of the fire brigade in quickly determining the hazardous area for poisoning, it is necessary to optimize the numerical simulation method and quickly determine the boundary of the poisoned area. In the process of developing simulation software, the calculation methods of traditional hazardous chemicals leakage poisoning area simulation software are studied. The demand of simulation software and the general rules of poison gas diffusion are analyzed. The traditional calculation methods are optimized. Traditional software uses contouring to simulate the need to calculate the concentration or dose at each point within the simulated area. After optimizing the traditional calculation methods, only the concentration or dose at the point near the critical line needs to be calculated. The method can simplify the operation of simulation program, accurately simulate the poisoning area, and meet the requirements of the fire department’s division of the warning area.