Evaluation and prediction of the effects of the dispersion of (VOCs) on the population in urban air using ANSYS CFX

A. Ibrir, Y. Kerchich, N. Hadidi, R. Rebhi


Abstract: Indoor-outdoor environments are polluted by volatile organic compounds (VOCs), mainly benzene, toluene, ethylbenzene and the three isomers ortho, meta and para-xylene, commonly known as BTEX. Motor vehicles are the main source of these compounds. In this regard, we propose to study the simulation of the dispersion of benzene, emitted by the exhaust gases of a vehicle in a (3D) medium, in order to predict the concentration of the polluting gas and the different physical dispersion parameters as a function the distance from the emission source of the vehicle to the location of the study and the height of the buildings. In our work, CFD simulations were carried out using the k-ε turbulence model provided by the commercial code ANSYS-CFX. The results showed that whenever the source of pollution approaches the urban environment, pollution remains high in urban areas, which affects the well-being of the population.

Full Text:



Hamouda, S.; Bouteraa, S.; Bahmani, A.; Bettahar, N. Les hydrotalcites et leurs applications dans l’environnement. Alger. Environmental Science and Technology 2 (2016) 273-280.

Armenta, S.; Garrigues, S.; Pastor, A.; Guardia, M.; Esteve-Turrillas, F.A. Headspace mass spectrometry determination of benzene , toluene and the mixture of ethylbenzene and xylene isomers in soil samples using chemometrics. Analytical Chemistry 587 (2007) 89-96.

Keddari ,D.; Afri-Mehennaoui, F.Z.; Sahli, L.; Mehennaoui, S. Qualité écologique via la faune macro-invertébrée benthique et devenir du niveau de contamination par le Cr et le Pb des sédiments de l’oued Boumerzoug (Constantine, Algérie). Environmental Science and Technology 5 (2019) 990-998.

Iodice, P.; Adamo, P.; Capozzi, F.; Di-Palma, A.; Senatore, A.; Spagnuolo, V.; Giordano, S. Air pollution monitoring using emission inventories combined with the moss bag approach. Science of the total environment 541 (2016) 1410-1419.

Aghaei, A.; Khademi, H. Evaluating and determining of heavy metals in the atmospheric dust by using statistical methods (PCA and CA). Alger. Environmental Science and Technology 2 (2016) 224-234.

Zhong, L.; Su, F.; Batterman, S. Volatile organic compounds (VOCs) in conventional and high performance school buildings in the U.S. Int. J. Environ. Res. Public Health 14 (2017) 1-18.

Simmons, A.; Fellous, J.L.; Ramaswamy, V.; Trenberth, K. Observation and integrated Earth-system science : A roadmap for 2016–2025. Adv Sp Res 57 (2016) 1-67.

Saarela, K.; Tirkkonen, T.; Laine-ylijoki, J.; Jurvelin, J.; Nieuwenhuijsen, M.J.; Jantunen, M. Exposure of population and microenvironmental distributions of volatile organic compound concentrations in the expolis study. Atmos. Environ 37 (2003) 5563-5575.

Na, K.; Kim, Y.P. Seasonal characteristics of ambient volatile organic compounds in Seoul , Korea. Atmos. Environ 35 (2001) 2603-2614.

Chan, C.Y.; Chan, L.Y.; Wang, X.M.; Liu, Y.M.; Lee, S.C.; Zou, S.C.; Sheng, G.Y.; Fu, J.M. Volatile organic compounds in roadside microenvironments of metropolitan Hong Kong. Atmos. Environ 36 (2002) 2039-2047.

Arnold, D.S.; Plank, C.A.; Erickson, E.E.; Pike, F.P. Solubility of Benzene in Water. Chemical and Engineering Data Series 3 (1958) 253-256.

Davardoost, F.; Kahforoushan, D. Modeling the dispersion of volatile organic compounds in indoor environment. Chemical Engineering & Technology 42 (2018) 1-22.

Pfeffer, H.U. Ambient air concentrations of pollutants at traffic-related sites in urban areas of north Rhine-Westphalia Germany. Sci. Total Environ 147 (1994) 263-273.

Vega, E.; Mugica, V.; Carmona, R.; Valencia, E. Hydrocarbon source apportionment in mexico city using the chemical mass balance receptor model. Atmos Environ 34 (2000) 4121-4129.

Saeed, A.; Vuthaluru, R.; Yang, Y.; Vuthaluru, H.B. Effect of feed spacer arrangement on flow dynamics through spacer filled membranes. Desalination 285 (2012) 163-169.

Hennane, S.; Hamou, A.; Chemani, H.; Janin, G.; Tayeb, A. Évaluation numérique des rejets de CO2 , gaz à effets de serre, au niveau de la zone industrielle d’Arzew, ALGÉRIE. Alger. Environmental Science and Technology 5 (2019) 977-982.

Habet, L.; Benrachedi, K. Study of dispersion of brine water into coastal seawater by using a pilot. Alger. Environmental Science and Technology 1 (2015) 33-39.

Stapleton, K.W.; Guentsch, E.; Hoskinson, M.K.; Finlay, W.H. On the suitability of k-ϵ turbulence modeling for aerosol deposition in the mouth and throat : A Comparison with experiment. J. Aerosol Sci. 31 (2000) 739-749.

Myong, H.K.; Kasagi, N. A new approach to the improvement of k-ε turbulence model for wall-bounded shear flows. JSME Int. J. 33 (1990) 63-72.

Launder, B.E.; Spalding, D.B. The numerical computation of turbulent flows. Computer Methods in Applied Mechanics and Engineering 3 (1974) 269-289.


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License. Copyright UMMB © 2020 University M'hamed Bougara - Boumerdes. Independance AV., Boumerdes, 35000 Algeria, Tel/Fax: +213 24 91 14 98/ +213 2491-29-51