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Appropriate boundary conditions for computational wind engineering models using the k-ϵ turbulence model

Richards, P.J / Hoxey, R.P

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 $n o ≈ u ∗ / z$ which is consistent with the suggested profile equations.

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Appropriate boundary conditions for computational wind engineering models using the k-ϵ turbulence model

Richards, P.J / Hoxey, R.P

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 $n o ≈ u ∗ / z$ 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 / Hoxey, R.P

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 $n o ≈ u ∗ / z$ which is consistent with the suggested profile equations.

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Title:

Appropriate boundary conditions for computational wind engineering models using the k-ϵ turbulence model

Contributors:

Richards, P.J (author) / Hoxey, R.P (author)

Published in:

Journal of Wind Engineering and Industrial Aerodynamics ; 46-47 ; 145-153

Publication date:

1993-01-01

Size:

9 pages

ISSN:

DOI:

https://doi.org/10.1016/0167-6105(93)90124-7

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

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