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Appropriate boundary conditions for computational wind engineering models using the k-ϵ turbulence model
AbstractIn computational models of wind engineering problems within the atmospheric surface layer the approach flow should normally be modelled as a homogeneous flow. Velocity and turbulence profiles associated with the k-ϵ turbulence model are proposed which produce homogeneous conditions. These equations are discussed in the light of full-scale measurements at Silsoe using sonic anemometers. It is suggested that the model constants k = 0.42, Cμ = 0.013 and σϵ = 3.22 more closely match the data obtained. It is also shown that the cospectrum for the Reynolds stress exhibits a characteristics frequency which is consistent with the suggested profile equations.
Appropriate boundary conditions for computational wind engineering models using the k-ϵ turbulence model
AbstractIn computational models of wind engineering problems within the atmospheric surface layer the approach flow should normally be modelled as a homogeneous flow. Velocity and turbulence profiles associated with the k-ϵ turbulence model are proposed which produce homogeneous conditions. These equations are discussed in the light of full-scale measurements at Silsoe using sonic anemometers. It is suggested that the model constants k = 0.42, Cμ = 0.013 and σϵ = 3.22 more closely match the data obtained. It is also shown that the cospectrum for the Reynolds stress exhibits a characteristics frequency which is consistent with the suggested profile equations.
Appropriate boundary conditions for computational wind engineering models using the k-ϵ turbulence model
Richards, P.J (Autor:in) / Hoxey, R.P (Autor:in)
Journal of Wind Engineering and Industrial Aerodynamics ; 46-47 ; 145-153
01.01.1993
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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