CFD Analysis of Wind-induced Pollutant Dispersion in Built Environment


  • Okafor Chinedu VINCENT Nnamdi Azikiwe University , Nigeria
  • Onyekachukwu Gozie ODENIGBO Nnamdi Azikiwe University , Nigeria
  • Okeke Arinze UCHENNA Nnamdi Azikiwe University , Nigeria



CFD, Wind Power, Pollutant Dispersions


The paper analyzed the wind-induced pollutant dispersion in a built environment using computational fluid dynamics simulation.  SF6 was used as the tracer gas released from a roof stack. The steady-state analysis used to develop the adaptive mesh was carried out using the RNG-KE turbulence model. The computational domain and boundary condition for the wind flow on the urban area was adopted as recommended by the Cost guideline. Also, the SF6 species was modeled as a passive scalar transport convection-diffusion equation. From the result, it was observed that the funnel effect and vortex shedding effect reduces the concentration level of pollutants within a locality.


. N.Al-khalidy, “City scale pollutant dispersion modelling utilising a combination of computational fluid dynamics and standard air-quality simulation”. International journal of mechanics. Vol. 11, No.2, pp.210-217,2017

. P.Gousseau, B.Blocken, T.Staphopoulos and G.J.F. Van Heights. “CFD simulation of pollutant dispersion around isolated buildings on the role of connective and turbulent mass fluxes in the prediction accuracy”. Journal of Hazardous material Vol.194,PP.422-434,2011

. J.Franke, C.Hirsch, A.Jensen, H.Krus, M.Schatzmann, P.Westbury, S.Miles, J.Wisse and N.Wright. “Recommendations on the use of CFD in wind engineering”, COST ActionC14: Impact of Wind and Storm on city life and Built Environment, von Karman Institute for Fluid Dynamics,2004.

. P.Richards and R.Hosey. “Appropriate boundary conditions for computational wind engineering model using the K-e model”. J.wind eng.ind.aerod. Vol.46, No.47, PP.145-153, 1993.

. B.Blocken, T.Stathopoulos, J.Carmeliet, CFD simulation of the atmospheric boundary layer: wall function problems.atmos.environ.41 (2), 228-252.

. V.Yakhot, S.Orszag, S.Thangam, T.Gatski and C.Speziale. “Development of turbulence model for shear flows by a double expansion technique”. physics of fluids.Vol.4,No.7,pp.1510-1520,1992.



How to Cite

Okafor Chinedu VINCENT, Onyekachukwu Gozie ODENIGBO, & Okeke Arinze UCHENNA. (2021). CFD Analysis of Wind-induced Pollutant Dispersion in Built Environment. International Journal of Engineering Research and Advanced Technology (ijerat), 7(4), 13-21.