Abstract
Purpose. Development fast calculating model which takes into account the meteorological parameters and buildings which are situated near the source of toxic chemical emission. Methodology. The developed model is based on the equation for potential flow and equation of pollutant dispersion. Equation of potential flow is used to compute wind pattern among buildings. To solve equation for potential flow Samarskii implicit difference scheme is used. The implicit change – triangle difference scheme is used to solve equation of mass transfer. Numerical integration is carried out using the rectangular difference grid. Method of porosity technique («markers method») is used to create the form of comprehensive computational region. Emission of ammonia is modeled using Delta function for point source. Findings. Developed 2D numerical model belongs to the class of «diagnostic models». This model takes into account the main physical factors affecting the process of dispersion of pollutants in the atmosphere. The model takes into account the influence of buildings on pollutant dispersion. On the basis of the developed numerical models a computational experiment was carried out to estimate the level of toxic chemical pollution in the case of unplanned ammonia release at ammonia pump station. Originality. Developed numerical model allows to calculate the 2D wind pattern among buildings and pollutant dispersion in the case unplanned ammonia release. Model allows to perform fast calculations of the atmosphere pollution. Practical value. The model can be used when developing the PLAS (Emergency Response Plan).
Highlights
The ammonia pipeline Toliatti–Odessa was built in the late 70s–early 80s for the transportation of the main products of the Toliatti nitrogen plant for export
The actual task is to estimate the level of contamination in working areas of the pump station in the case of unplanned ammonia release
The purpose of this paper is to develop a numerical model for computing the chemical contamination of air on the territory of the ammonia pump station for unplanned ammonia release
Summary
The ammonia pipeline Toliatti–Odessa was built in the late 70s–early 80s for the transportation of the main products of the Toliatti nitrogen plant for export. The end point of ammonia pipeline is Odessa Port. There are several pumping stations along the route of this pipeline (Fig. 1). These pump stations support the correct pressure in ammonia pipeline. From the point view of industrial safety these pump stations are the chemically dangerous objects [4, 6, 15]. Prediction of contaminated zones and detection of Dangerous Level of Contamination is the basis of this document. The actual task is to estimate the level of contamination in working areas of the pump station in the case of unplanned ammonia release
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
