Journal ArticleDOI
Appropriate boundary conditions for computational wind engineering models using the k-ϵ turbulence model
Peter Richards,R.P. Hoxey +1 more
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In this paper, velocity and turbulence profiles associated with the k-ϵ turbulence model are proposed which produce homogeneous conditions, and the cospectrum for the Reynolds stress exhibits a characteristics frequency n o ≈ u ∗ / z which is consistent with the suggested profile equations.About:
This article is published in Journal of Wind Engineering and Industrial Aerodynamics.The article was published on 1993-08-01. It has received 1044 citations till now. The article focuses on the topics: K-omega turbulence model & K-epsilon turbulence model.read more
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Journal ArticleDOI
Numerical calculation of the wind action on buildings using Eurocode 1 atmospheric boundary layer velocity profiles
TL;DR: In this article, the results of the flow characterization, obtained with the FLUENT CFD code were performed using the k turbulence model with the MMK modification, for different conditions of aerodynamic roughness.
Journal ArticleDOI
Evaluating the accuracy of RANS wind flow modeling over forested terrain - Part 1: canopy model validation
TL;DR: In this article, the authors used the Reynolds-averaged Navier-Stokes (RANS) equations to validate a canopy model by computing a fully developed wind flow within and above a horizontally homogeneous dense forest as in the work of Dalpé and Masson.
Dissertation
Élaboration d'un modèle du climat distribué à l'échelle de l'abri et de la plante en cultures ornementales sous serres : analyse des transferts de masse et de chaleur, bilans énergétiques
TL;DR: In this paper, the authors propose a model for simulating the evolution of the climate in a 2D environment, in the presence of chauffage and of diurnes or of a rayonnement solaire.
Proceedings ArticleDOI
Wind Potential determination in a known area
TL;DR: In this article, the authors proposed a method to estimate the wind potential in any other point of a known area, provided that we already know the potential in one point of the area.
Evaluating the accuracy of RANS wind flow modeling and its impact on capacity factor for moderately complex forested terrain
TL;DR: In this paper, the uncertainty in the wind flow predictions over moderately complex forested terrain and its impact on capacity factor, using the Reynolds-Averaged Navier-Stokes (RANS) equations coupled with a modified k-e turbulence closure in the open-source software OpenFOAM v2.4.
References
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Journal ArticleDOI
The numerical computation of turbulent flows
Brian Launder,D. B. Spalding +1 more
TL;DR: In this paper, the authors present a review of the applicability and applicability of numerical predictions of turbulent flow, and advocate that computational economy, range of applicability, and physical realism are best served by turbulence models in which the magnitudes of two turbulence quantities, the turbulence kinetic energy k and its dissipation rate ϵ, are calculated from transport equations solved simultaneously with those governing the mean flow behaviour.
Characteristics of turbulence in a boundary layer with zero pressure gradient
TL;DR: In this article, the results of an experimental investigation of a turbulent boundary layer with zero pressure gradient are presented and the importance of the region near the wall and the inadequacy of the concept of local isotropy are demonstrated.
Neutrally stratified boundary-layer flow over roughness changes and topography
TL;DR: In this paper, a linear model for neutral surface-layer flow over complex terrain is presented, which makes it possible to make high-resolution computations for an arbitrary distribution of surface roughness and topography.
Journal ArticleDOI
A mixed spectral finite-difference model for neutrally stratified boundary-layer flow over roughness changes and topography
TL;DR: In this paper, a linear model for neutral surface-layer flow over complex terrain is presented, which combines the simplicity and computational efficiency of linear methods with flexibility for closure schemes of finite-difference methods.
Journal ArticleDOI
Simulation of Effect of Wind Barriers on Airflow
TL;DR: In this article, the authors developed a quantitative, theoretical simulation of airflow normal to narrow wind barriers of various porosities and, when possible, verify the results using experimental data, using finite difference methods having a combination of upwind and central difference schemes.