@inproceedings{2004348319483 ,
language = {English},
copyright = {Compilation and indexing terms, Copyright 2023 Elsevier Inc.},
copyright = {Compendex},
title = {Numerical modeling of wind flow over different types of topography},
journal = {Proceedings of the 2004 Structures Congress - Building on the Past: Securing the Future},
author = {Bitsuamlak, G. and Stathopoulos, T. and Bedard, C.},
year = {2004},
pages = {1645 - 1655},
address = {Nashville, TN, United states},
abstract = {The paper describes a numerical study about topography effects on design wind load by using Computational Fluid Dynamics (CFD) techniques. For this purpose a CFD tool was developed using an object oriented approach and C++ programming language. The CFD procedure consisted of solving the Reynolds time-averaged Navier-Stokes equations and the standard k-Ε turbulence model using body-fitted nearly orthogonal grids. A robust grid generator tool suitable for producing orthogonal grids over curved and sloping complex surfaces has also been developed. Subsequently, wind load design parameters such as speed-up ratio values were generated for a wide spectrum of terrain geometries that included escarpments, single and multiple hills, and valleys. Ground roughness and geometry approximation effects have been investigated. For validation of the CFD results as well as highlighting advantages and disadvantages of a particular method, results obtained from a variety of sources were compared: the present CFD study, Boundary Layer Wind Tunnel (BLWT) experiments, field measurements, NBCC (1995) provisions, analytical methods, and previous numerical works available in literature. The present CFD results compare well with BLWT data. Speed-up ratio values are produced for both new and covered cases by the Commentaries of National Building Code of Canada (1995).},
key = {Structural design},
keywords = {Building codes;Computational fluid dynamics;Computer simulation;Object oriented programming;Surface roughness;Wind effects;Wind tunnels;},
note = {Boundary layer wind tunnels (BLWT);Speed up ratio;Wind flow;Wind load;},
}

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For this purpose a CFD tool was developed using an object oriented approach and C++ programming language. The CFD procedure consisted of solving the Reynolds time-averaged Navier-Stokes equations and the standard k-Ε turbulence model using body-fitted nearly orthogonal grids. A robust grid generator tool suitable for producing orthogonal grids over curved and sloping complex surfaces has also been developed. Subsequently, wind load design parameters such as speed-up ratio values were generated for a wide spectrum of terrain geometries that included escarpments, single and multiple hills, and valleys. Ground roughness and geometry approximation effects have been investigated. For validation of the CFD results as well as highlighting advantages and disadvantages of a particular method, results obtained from a variety of sources were compared: the present CFD study, Boundary Layer Wind Tunnel (BLWT) experiments, field measurements, NBCC (1995) provisions, analytical methods, and previous numerical works available in literature. The present CFD results compare well with BLWT data. Speed-up ratio values are produced for both new and covered cases by the Commentaries of National Building Code of Canada (1995).","key":"2004348319483","keywords":"Building codes;Computational fluid dynamics;Computer simulation;Object oriented programming;Surface roughness;Wind effects;Wind tunnels;","note":"Boundary layer wind tunnels (BLWT);Speed up ratio;Wind flow;Wind load;","bibtex":"@inproceedings{2004348319483 ,\nlanguage = {English},\ncopyright = {Compilation and indexing terms, Copyright 2023 Elsevier Inc.},\ncopyright = {Compendex},\ntitle = {Numerical modeling of wind flow over different types of topography},\njournal = {Proceedings of the 2004 Structures Congress - Building on the Past: Securing the Future},\nauthor = {Bitsuamlak, G. and Stathopoulos, T. and Bedard, C.},\nyear = {2004},\npages = {1645 - 1655},\naddress = {Nashville, TN, United states},\nabstract = {The paper describes a numerical study about topography effects on design wind load by using Computational Fluid Dynamics (CFD) techniques. For this purpose a CFD tool was developed using an object oriented approach and C++ programming language. The CFD procedure consisted of solving the Reynolds time-averaged Navier-Stokes equations and the standard k-Ε turbulence model using body-fitted nearly orthogonal grids. A robust grid generator tool suitable for producing orthogonal grids over curved and sloping complex surfaces has also been developed. Subsequently, wind load design parameters such as speed-up ratio values were generated for a wide spectrum of terrain geometries that included escarpments, single and multiple hills, and valleys. Ground roughness and geometry approximation effects have been investigated. For validation of the CFD results as well as highlighting advantages and disadvantages of a particular method, results obtained from a variety of sources were compared: the present CFD study, Boundary Layer Wind Tunnel (BLWT) experiments, field measurements, NBCC (1995) provisions, analytical methods, and previous numerical works available in literature. The present CFD results compare well with BLWT data. 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