Physical Modeling of Gas Pollutant Motion in the Atmosphere

Zavila, Ondřej

doi:10.5772/48405

Cited by 7 publications

(14 citation statements)

References 6 publications

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“…The test problems were solved using the standard k-e model, but in present investigation, it was used RNG k-e to compare the results with paper by Zavila. 5 According to Chang et al 66 and Saeed et al, 67 standard k-e and Re-Normalisation Group (RNG) k-e turbulent models give almost the same results.…”

Section: Computational Domain and Gridmentioning

confidence: 90%

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Numerical modelling of a passive scalar transport from thermal power plants to air environment

Issakhov

Baitureyeva

2018

Advances in Mechanical Engineering

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The number of thermal power plants is growing due to the industry development and the growth of energy consumption. This leads to an increase in harmful emissions in the atmosphere. There is a necessity to control the emission concentration level in the areas of power plants location. The aim of this work was to study the level of pollution concentration at different distances from the source. The mathematical model and the numerical algorithm were verified by solving test problems and comparing them with the experimental data and numerical results of other authors. Furthermore, the pollution distribution in three-dimensional case was investigated in a real physical scale. CO 2 was considered as polluting gas. As a real example, the Ekibastuz SDPP-1 coal-fired thermal power plant was simulated. The remarkable feature of this thermal power plant is that the pollution emits from two chimneys of different heights (330 and 300 m). The results showed that due to the difference between chimney heights (30 m), the pollution concentration from the higher chimney dropped far away from source, than from the lower one (2160 and 1970 m, respectively). Obviously, building higher chimneys helps to reduce the harmful impact of emissions on the environment. Also, it can be used to control the emissions level at already existing power plants.

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Section: Computational Domain and Gridmentioning

confidence: 90%

“…This distance increases in proportion to the source capacity. [4][5][6][7][8][9][10][11][12] The study of this process in Kazakhstan is especially important. About 87% of Kazakhstan energy uses coal as fuel.…”

Section: Introductionmentioning

confidence: 99%

Numerical modelling of a passive scalar transport from thermal power plants to air environment

Issakhov

Baitureyeva

2018

Advances in Mechanical Engineering

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“…There was created three-dimensional grid with the scale 1:1000. Many parameters were taken from previous studies of foreign authors [2]. Grid contains 568 486 three-dimensional cells.…”

Section: Mathematical Modelling and Geometry Parametersmentioning

confidence: 99%

“…During the solution there was applied RANS (Reynolds-averaged Navier-Stokes equations). As in [2], it has been used RNG k-e turbulence model. Species scalar transport model was applied in order to calculate the movement of substances.…”

Section: Mathematical Modelling and Geometry Parametersmentioning

confidence: 99%

“…It was assumed that there exist operating force of gravity and discharged substances do not react with air. Such parameters as pressure, temperature, convergence criteria were specified analogically as in [2]. The Reynolds number is varied from 1017 to 2283, depending on the wind speed and pollution density.…”

Section: Mathematical Modelling and Geometry Parametersmentioning

confidence: 99%

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Numerical simulation of a passive scalar transport from thermal power plants

Issakhov¹,

Baitureyeva

2017

AIP Conference Proceedings

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Abstract. The active development of the industry leads to an increase in the number of factories, plants, thermal power plants, nuclear power plants, thereby increasing the amount of emissions into the atmosphere. Harmful chemicals are deposited on the soil surface, remain in the atmosphere, which leads to a variety of environmental problems which are harmful for human health and the environment, flora and fauna. Considering the above problems, it is very important to control the emissions to keep them at an acceptable level for the environment. In order to do that it is necessary to investigate the spread of harmful emissions. The best way to assess it is the creating numerical simulation of gaseous substances' motion. In the present work the numerical simulation of the spreading of emissions from the thermal power plant chimney is considered. The model takes into account the physical properties of the emitted substances and allows to calculate the distribution of the mass fractions, depending on the wind velocity and composition of emissions. The numerical results were performed using the ANSYS Fluent software package. As a result, the results of numerical simulations and the graphs are given.

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Modeling of a passive scalar transport from thermal power plants to atmospheric boundary layer

Issakhov

Baitureyeva

2019

Int. J. Environ. Sci. Technol.

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Physical Modeling of Gas Pollutant Motion in the Atmosphere

Cited by 7 publications

References 6 publications

Numerical modelling of a passive scalar transport from thermal power plants to air environment

Numerical modelling of a passive scalar transport from thermal power plants to air environment

Numerical simulation of a passive scalar transport from thermal power plants

Modeling of a passive scalar transport from thermal power plants to atmospheric boundary layer

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