A numerical study for the assessment of air pollutant dispersion with chemical reactions from a thermal power plant

Abstract

In this work, a computational simulation of the pollutants spread generated during fuel combustion at Ekibastuz SDPP-1 and their chemical reaction in the atmosphere have been presented. Using the example of a real thermal power plant (Ekibastuz SDPP-1), the dispersion NO, NO 2 , CO and products NO 2 , HNO 3 , CO 2 during a chemical reaction with oxygen was modeled. The numerical method was verified by solving three test problems and the received computational solutions were compared with data from the measurement and the computational data of other authors. The purpose of the work was to investigate the pollution level at various ranges from the source. As a result, the mass fraction of the concentration and product during a chemical reaction were determined. According to the obtained data, with increasing distance from the source, the concentration of pollution spreads more widely under the influence of diffusion. The farther the distance from the chimney, the lower the concentration of the substance and products. Thus, the obtained computational values may allow in the future predicting the optimal distance from residential areas for the construction of thermal power plants, at which the concentration of emissions will remain at a safe level.

Numerical simulation of social distancing of preventing airborne transmission in open space with lateral wind direction, taking into account temperature of human body and floor surface

“…In order to close the system of equations was used SST k-ω turbulent model, which described in detail in (Spalart, 1997 ; Menter and Kuntz 2003 ; Menter 1994 ; Jones and Launder 1972 ; Issakhov and Mashenkova 2019 ; Issakhov and Omarova 2019 ; Issakhov et al 2020a ; Issakhov et al 2020b ; Issakhov, Alimbek, Zhandaulet, 2021 ).…”

Air pollution dispersion in Hail city: Climate and urban topography impact

“…Issakhov et al [ 12 ] simulated the emission of NO, NO 2 , CO, and NO 2 , HNO 3 , CO 2 during a chemical reaction with oxygen from a thermal power plant. The authors demonstrate that the recorded air pollution caused by these gases increases as the distance to the chimney (emission source) decreases.…”

Capabilities and limitations of Large Eddy Simulation with perfectly stirred reactor assumption for engineering applications of unsteady, hydrogen combustion sequences

“…Chemical industry (Hoi et al, 2007), nuclear power plants (Garcia-Cascales et al, 2014;Karata et al, 2012;OECD, 2000;Sathiah et al, 2012), propulsion (Roy et al, 2004;Smirnov et al, 1999) are some of the fields where experts are especially concerned about safe combustion, accident prevention or hydrodynamics prediction. Benchmarks and real case studies of applications of computational fluid dynamics (CFD) models are key exercises to improve the knowledge in these fields (Issakhov et al, 2020;Kim & Kim, 2019;Pedersen & Rüther, 2019;Soto-Meca et al, 2016;Xiang et al, 2020). These strategies and others where CFD models are coupled with artificial techniques (Mosavi et al, 2019;Park et al, 2020;Shamshirband et al, 2020) are contributing to enhance the efficiency of the computations in these fields.…”

“…In their study, the authors built both, a lab-scale model and a mesh grid from the same stereolithographic file of a gauging station located in a river in Norway and validated the simulations with the experimental data obtained from the lab-scale model. Issakhov et al (2020) studied the chemical reaction of combustion sub-products emitted from a thermal power plant located in Kazakhstan and its dispersion in the nearby of the plant with CFD. They used two benchmarks to validate their CFD model before they applied it to the actual case of the study.…”