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Investigation of Turbulent Analysis Methods for CFD of Gas Dispersion Around a Building
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  • Journal title : Fire Science and Engineering
  • Volume 29, Issue 5,  2015, pp.42-50
  • Publisher : Korea Institute of Fire Science and Engineering
  • DOI : 10.7731/KIFSE.2015.29.5.042
 Title & Authors
Investigation of Turbulent Analysis Methods for CFD of Gas Dispersion Around a Building
Ko, Min Wook; Oh, Chang Bo; Han, Youn Shik; Do, Kyu Hyung;
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Three simulation approaches for turbulence were applied for the computation of propane dispersion in a simplified real-scale urban area with one building:, Large Eddy Simulation (LES), Detached Eddy Simulation (DES), and Unsteady Reynolds Averaged Navier-Stokes (RANS). The computations were performed using FLUENT 14, and the grid system was made with ICEM-CFD. The propane distribution depended on the prediction performance of the three simulation approaches for the eddy structure around the building. LES and DES showed relatively similar results for the eddy structure and propane distribution, while the RANS prediction of the propane distribution was unrealistic. RANS was found to be inappropriate for computation of the gas dispersion process due to poor prediction performance for the unsteady turbulence. Considering the computational results and cost, DES is believed to be the optimal choice for computation of the gas dispersion in a real-scale space.
Propane;Gas dispersion;Large eddy simulation (LES);Detached eddy simulation (DES);Reynolds averaged navier stokes (RANS);Computational fluid dynamics (CFD);
 Cited by
X. X. Li, C. H. Liu, D. Y. C. Leung and K. M. Lam, "Recent Progress in CFD Modelling of Wind Field and Pollutant Transport in Street Canyons", Atmospheric Environment, Vol. 40, No. 29, pp. 5640-5658 (2006). crossref(new window)

N. S. Holmes and L. Morawska, "A Review of Dispersion Modelling and its Application to the Dispersion of Particles: An Overview of Different Dispersion Models Available", Atmospheric Environment, Vol. 40, No. 30, pp. 5902-5928 (2006). crossref(new window)

Z. Bo and C. Guo-Ming, "Quantitative Risk Analysis of Toxic Gas Release Caused Poisoning-A CFD and Dose-Response Model Combined Approach", Process Safety and Environmental Protection, Vol. 88, pp. 253-262 (2010). crossref(new window)

B. S. Lee, T. Y. Kim, D. H. Lee and D. H. Lee, "Passive Control of the Vortex Shedding behind a Rectangular Cylinder Near a Wall", Journal of The Korean Society for Aeronautical & Space Sciences, Vol. 32, No. 6, pp. 16-22 (2004). crossref(new window)

M. Pontiggia, G. Landucci, V. Busini, M. Derudi, M. Alba, M. Scaioni, S. Bonvicini, V. Cozzani, et al., "CFD Model Simulation of LPG Dispersion in Urban Areas", Atmospheric Environment, Vol. 45, No. 24, pp. 3913-3923 (2011). crossref(new window)

S. M. Salim, R. Buccolieri, A. Chan and S. D. Sabatino, "Numerical Simulation of Atmospheric Pollutant Dispersion in an Urban Street Canyon: Comparison between RANS and LES", Journal of Wind Engineering and Industrial Aerodynamics, Vol. 99, No. 2, pp. 103-113 (2011). crossref(new window)

S. Hung, Q. S. Li and S. Xu, "Numerical Evaluation of Wind Effects on a Tall Steel Building by CFD", Journal of Constructional Steel Research, Vol. 63, No. 5, pp. 612-627 (2007). crossref(new window)

S. B. Pope, "Turbulent Flows", CAMBRIDGE UNIVERSITY PRESS, U.K (2000).

P. Sagaut, "Large Eddy Simulation for Incompressible Flows", Springer, U.S.A. (1998).

P. R. Spalart, "Detached-Eddy Simulation", Annual Review of Fluid Mechanics, Vol. 41, pp. 181-202 (2009). crossref(new window)

L. S. Hedges, A. K. Travin and P. R. Spalart, "Detached-Eddy Simulation over a Simplified Landing Gear", Journal of Fluids Engineering, Vol. 124, No. 2, pp. 413-423 (2002). crossref(new window)

FLUENT Theory Guide, ANSYS Inc.

ANSYS Co., "ANSYS Ver.14" (2012).

ANSYS Co., "ICEM CFD Ver.13" (2010).

Z. N. Pintaric, "Assessment of the Consequences of Accident Scenarios Involving Dangerous Substances", Process Safety and Environmental Protection, Vol. 85, No. 1, pp. 23-38 (2007). crossref(new window)

I. Glassman, "Combustion: Third edition", ACADEMIC PRESS, U.S.A. (2013).