Modelling of toxic contaminants dispersion during a real industrial accident using large eddy simulation and rans models Conference Paper uri icon


  • 2018 Hungarian Meteorological Service. All Rights Reserved. The paper presents a Computational Fluid Dynamics (CFD) approach based on a finite volume technique for the modelling of pollutant dispersion from a real industrial accident, by applying a Large Eddy Simulation (LES) model for the turbulence-related quantities while the sub-grid scale (SGS) modelling is achieved by the classic Smagorinsky model based on the eddy viscosity hypothesis. The proposed methodology was incorporated into the in-house code ADREA-HF. Numerical simulations were conducted with the use of the ADREA/SIMPLER algorithm for the decoupling of pressure and velocity equations. A number of scenarios were examined and the results obtained were compared with available measurements recorded by sensors of Accidental Gas RelEase (AGREE) data set. We also use a Reynolds-Averaged Navier Stokes (RANS) modelling approach, for comparison reasons. The performance of the models are dependent on the incident wind direction and speed and it varies based on the position of the AGREE sensors. Good agreement between results and measurements was obtained.

published proceedings

  • HARMO 2017 - 18th International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes, Proceedings

author list (cited authors)

  • Argyropoulos, C. D., Efthimiou, G. C., Andronopoulos, S., Kakosimos, K. E., & Markatos, N. C.

publication date

  • January 2017