Mathematical modeling of air pollution in working room

M. Biliaiev, O. Berlov, V. Kozachyna, V. Tsurkan
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Abstract

Purpose. Development of CFD model and computer code for the analysis and forecasting of the process of formation of areas of chemical contamination in the workplace in the event of an emergency leak of a hazardous substance, allowing to take into account the influence of obstacles and the operation of the ventilation system on this process. The methods. The masstransfer equation is used to calculate the process of formation of areas of chemical contamination in the workplace over time. Navier-Stokes equations are used to solve the problem of aerodynamics – determination of the air flow velocity field in the room. For the numerical solution of modeling equations, finite-difference splitting schemes are used. On the basis of the developed numerical model, a computer code was created for conducting computational experiments Findings. An effective CFD model and computer code were created, which allow to quickly analyze the level of chemical pollution of working areas in possible emergency situations accompanied by the emission of dangerous substances. The results of the computational experiment are presented. The originality. An effective CFD model has been developed, which allows to calculate the dynamics of the formation of areas of chemical air pollution in the workplace in the event of an emergency leak of a chemically hazardous substance Practical implementation. On the basis of the proposed CFD model, a computer code has been developed that allows determining the dynamics of the formation of areas of contamination in the workplace during the emergency emission of hazardous substances. The model can be used to analyze the risk of toxic damage to personnel in the workplace
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车间空气污染的数学建模
目的。开发CFD模型和计算机代码,用于在危险物质紧急泄漏的情况下分析和预测工作场所化学污染区域的形成过程,考虑障碍物和通风系统的运行对该过程的影响。的方法。传质方程用于计算工作场所化学污染区域随时间的形成过程。采用纳维-斯托克斯方程求解空气动力学问题——室内气流速度场的确定。对于模拟方程的数值解,采用有限差分分裂格式。在建立的数值模型的基础上,建立了计算机代码进行计算实验。建立了有效的CFD模型和计算机代码,可以在可能发生的紧急情况下快速分析工作区域的化学污染水平,并伴有危险物质的排放。给出了计算实验结果。的创意。建立了一种有效的CFD模型,可以在发生化学有害物质紧急泄漏的情况下,计算工作场所化学空气污染区域形成的动力学。在建议的CFD模型的基础上,开发了一种计算机代码,可以确定在紧急排放有害物质期间工作场所污染区域形成的动态。该模型可用于分析工作场所人员的毒性损害风险
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