COAL DUST EMISSION PROBLEM

M. M. Biliaiev; M. O. Oladipo

doi:10.15802/stp2016/90450

Authors

M. M. Biliaiev Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan, Ukraine https://orcid.org/0000-0002-1531-7882
M. O. Oladipo Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan, Nigeria https://orcid.org/0000-0001-7945-6657

DOI:

https://doi.org/10.15802/stp2016/90450

Keywords:

air pollution, gondola car, bulk cargo transportation, numerical simulation, air injection

Abstract

Purpose. The article aims to develop 2D numerical models for the prediction of atmospheric pollution during transportation of coal in the railway car, as well as the ways to protect the environment and the areas near to the mainline from the dust emission due to the air injection installation. Methodology. To solve this problem there were developed numerical models based on the use of the equations of motion of an inviscid incompressible fluid and mass transfer. For the numerical integration of the transport equation of the pollutant the implicit alternating-triangular difference scheme was used. For numerical integration of the 2D equation for the velocity potential the method of total approximation was used. The developed numerical models are the basis of established software package. On the basis of the constructed numerical models it was carried out a computational experiment to assess the level of air pollution when transporting bulk cargo by rail when the railway car has the air injection. Findings. 2D numerical models that belong to the class «diagnostic models» were developed. These models take into account the main physical factors affecting the process of dispersion of dust pollution in the atmosphere during transportation of bulk cargo. The developed numerical models make it possible to calculate the dust loss process, taking into account the use of the air injection of the car. They require a small cost of the computer time during practical realization at the low and medium power machines. There were submitted computational calculations to determine pollutant concentrations and the formation of the zone of pollution near the train with bulk cargo in «microscale» scale taking into account the air curtains. Originality. 2D numerical models taking into account the relevant factors influencing the process of dispersion of pollutants in the atmosphere, and the formation of the zone of pollution during transportation of bulk cargo by rail were created. A way to protect the atmosphere from pollution during the emission of bulk cargoes from the rail car, which is based on the principle of the air injection, was developed. Practical value. The efficient numerical models which can be used in the development of environmental protection measures in the operation of railway transport were considered. The proposed model allows calculating 2D dynamics of wind flow, taking into account the installed air injection, and mass transfer process of pollutants in the atmosphere.

Author Biographies

M. M. Biliaiev, Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan

Dep. «Hydraulics and Water Supply», Lazaryan St., 2, Dnipro, Ukraine, 49010, tel. +38 (056) 273 15 09

M. O. Oladipo, Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan

Dep. «Hydraulics and Water Supply», Lazaryan St., 2, Dnipro, Ukraine, 49010, tel. +38 (056) 273 15 09

References

Biliaiev, M. M., Gunko, Y. Y., & Mashikhina, P. B. (2013). Matematicheskoye modelirovaniye v zadachakh ekologicheskoy bezopasnosti i monitoringa chrezvychaynykh situatsiy. Dnepropetrovsk: Aktsent PP.

Biliaiev, M. M., & Karpo, A. A. (2016). Modelirovaniye protsessa snosa ugolnogo kontsentrata iz poluvagonov. Zbirnyk naukovykh prats «Naukovyi visnyk budivnytstva», 1(83), 196-199.

Berlyand M. Y., (1975). Sovremennyye problemy atmosfernoy diffuzii i zagryazneniya atmosfery. Leningrad: Gidrometeoizdat.

Berlyand, M. Y. (1985). Prognoz i regulirovaniye zagryazneniya atmosfery. Leningrad: Gidrometeoizdat.

Bruyatskiy, Y. V. (2000). Teoriya atmosfernoy diffuzii radioaktivnykh vybrosov. Kiev: Institut gidromekhaniki NAN Ukrainy.

Gusev, N. G., & Belyayev, V. A. (1991). Radioaktivnyye vybrosy v biosfere. Moscow: Energoatomizdat.

Konstantinov, Y. M. (1981). Gidravlika. Kiev: Vyshcha shkola.

Kostryukov, V. A. (1975). Osnovy gidravliki i aerodinamiki. Moscow: Vyshcha shkola.

Marchuk, G. I. (1982). Matematicheskoye modelirovaniye v probleme okruzhayushchey sredy. Moscow: Nauka.

Rudakov, D. V. (2004). Model rasseivaniya primesi v prizemnom sloye atmosfery nad poverkhnostyu so slozhnym relyefom. Visnyk Dnipropetrovskoho natsionalnoho universytetu. Seriia: Mekhanika, 6(8(1)), 89-97.

Samarskiy, A. A. (1983). Teoriya raznostnykh skhem. Moscow: Nauka.

Uork, K., & Uorner, S. (1980). Zagryazneniye vozdukha. Istochniki i kontrol. Moscow: Mir.

Zgurovskiy, M. Z., Skopetskiy, V. V., Khrushch, V. K., & Biliaiev, M. M. (1997). Chislennoye modelirovaniye rasprostraneniya zagryazneniya v okruzhayushchey srede. Kyiv: Naukova dumka.

Berlov, O. V. (2016). Atmosphere protection in case of emergency during transportation of dangerous cargo. Nauka ta prohres transportu – Science and Transport Progress, 1(61), 48-54. doi:10.15802/stp2016/60953

Biliaiev, M. M., & Kharytonov, M. M. (2012). Numerical Simulation of Indoor Air Pollution and Atmosphere Pollution for Regions Having Complex Topography. Air Pollution Modeling and its Application XXI. NATO Science for Peace and Security Series C: Environmental Security. Springer Netherlands, 87-91. doi:10.1007/978-94-007-1359-8_15

Final Report Environment Evaluation of Fugitive Coal Dust Emission from Coal Trains Goonyella, Blackwater and Moura Coal Rail Systems. Queensland, Queensland Rail Limited (2008)