Modeling the process of formation of stagnation zones at hazardous production facility with application of CFD technologies

Abstract

Purpose. Early safety assessment of propanebutane storage facilities by modeling the processes of formation of stagnation zones with possible release of gaseous hazardous substances. Methodology. The presented research uses threedimensional modeling methods and finite volumes using CFD technologies based on FlowVision software package. It is based on numerical solution of threedimensional equations of fluid and gas dynamics, including the laws of conservation of mass, momentum (NavierStokes equations), and equations of state. findings. Using the methods of threedimensional modeling and finite volumes, stagnation zones in a tank farm were calculated for different wind directions and measurement heights, which made it possible to comprehensively assess the situation at the facility in question and develop measures to improve safety during the operation of the tank farm, as well as recommendations for making changes at the design stage of reservoir parks with propanebutane mixture in order to increase safety of the facility in case of depressurization of equipment. originality. It was demonstrated that the buildings located on the territory of the tank farm worsen the movement of air flow, which contributes to formation of stagnation zones of considerable size and, as a result, an increase in potential dispersion time of the probable accidental release of hazardous substances. It has been established that for the object under consideration, the maximum sizes of stagnation zones were observed at the north direction of the wind, and the minimum – at the southeast direction of the wind. Practical value. Using advanced visualization and data processing tools, we can analyze the calculation results and obtain necessary data relatively quickly and efficiently. The obtained simulation results allow us to do similar studies for objects where an emergency outburst of gaseous substances is possible.