Implementation of newly developed algorithms in the simulation of atmospheric turbulent transports

 
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1997 (EN)
Implementation of newly developed algorithms in the simulation of atmospheric turbulent transports (EN)

Anagnostopoulos, JS (EN)
Bergeles, GC (EN)
Kadja, M (EN)

N/A (EN)

The paper presents a three-dimensional transient numerical model for atmospheric wind flow and industry and/or traffic pollutant dispersion over terrains having a complex topography. The model is based on a finite-volume integration of the equations governing mass, momentum, heat and pollutant transport within the earth's atmospheric boundary layer, using a collocated grid arrangement. The instability provoked by such a formulation was avoided by using a special pressure-velocity coupling. Local refinement of the grid was achieved via a domain decomposition method. The technique of 'porosity' used to approximate curved three-dimensional boundaries is incorporated in the procedure, thus avoiding the less accurate and more common approximation by a broken surface with segments parallel to the coordinate lines. The method was validated by simulating the how over the Attica peninsula for which measurements of wind speed and pollutant emissions are available. (C) 1997 Elsevier Science Ltd. (EN)

journalArticle

Wind (EN)
Atmospheric Turbulence (EN)
Turbulent flow (EN)
Computer simulation (EN)
Wind flow (EN)
Numerical Model (EN)
Domain decomposition method (EN)
simulation (EN)
topography (EN)
Domain Decomposition Method (EN)
Finite volume method (EN)
atmospheric flow (EN)
turbulence (EN)
Finite Volume (EN)
Atmospheric Boundary Layer (EN)
Atmospheric turbulence (EN)
atmospheric transport (EN)
Three Dimensional (EN)
Wind Flow (EN)
numerical model (EN)
Wind Speed (EN)
complex terrain (EN)
wind (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Computers and Fluids (EN)

1997


PERGAMON-ELSEVIER SCIENCE LTD (EN)



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