Numerical study for the assessment of pollutant dispersion from a thermal power plant under the different temperature regimes

  • A. IssakhovEmail author
  • A. Mashenkova
Original Paper


In this paper, numerical simulation of motion and dispersion of pollutant emissions into the atmosphere under real atmospheric conditions were considered. To solve this problem, a system of Reynolds-averaged Navier–Stokes equations was used, and the standard k-epsilon and SST k-omega turbulence models were used to close this system of equations. Moreover, the test problem was solved numerically to verify the mathematical model and numerical algorithm. The obtained numerical results were compared with the experimental data and modeling results of well-known authors. A proven mathematical model and numerical algorithm was used to describe the process of pollutant emissions from Ekibastuz SDPP (Ekibastuz State District power plant) chimneys and the spread of CO2 in the air flow field under real atmospheric conditions. For this problem, four different speed regimes (the first—0.5 m/s and 1 m/s, the second—1 m/s and 1.5 m/s, the third—2 m/s and 4 m/s, and the fourth—4 m/s and 5 m/s), as well as three different temperature regimes (constant temperature, decrease temperature, and temperature inversion) were considered.


Reynolds-averaged Navier–Stokes (RANS) Jet in crossflow Pollutant dispersion SIMPLE algorithm Temperature inversion 



This work is supported by the grant from the Ministry of education and science of the Republic of Kazakhstan.

Compliance with ethical standards

Conflict of interest

The authors declare that there is no conflict of interests regarding the publication of this paper.


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Copyright information

© Islamic Azad University (IAU) 2019

Authors and Affiliations

  1. 1.Al-Farabi Kazakh National UniversityAlmatyRepublic of Kazakhstan
  2. 2.Kazakh British Technical UniversityAlmatyRepublic of Kazakhstan

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