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
Citations
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RANS simulations of wind flow at the Bolund experiment
TL;DR: In this paper, a detailed description of three different wind flow models, all based on a Reynolds-averaged Navier-Stokes approach and two-equation k-e closure, were tested as part of the Bolund blind comparison.
Journal ArticleDOI
High Spatial Resolution Assessment of the Effect of the Spanish National Air Pollution Control Programme on Street-Level NO2 Concentrations in Three Neighborhoods of Madrid (Spain) Using Mesoscale and CFD Modelling
Jose Luis Santiago,Beatriz Lardiés Sánchez,Esther Rivas,Marta G. Vivanco,Mark R. Theobald,Juan Luis Garrido,Victoria Gil,Alberto Martilli,Alejandro Rodríguez-Sánchez,Riccardo Buccolieri,Fernando Martín +10 more
TL;DR: In this article , the effects of emission reduction measures on urban air quality were investigated at the street scale in three neighborhoods in Madrid, Spain, by using Computational Fluid Dynamic (CFD) simulations driven by mesoscale meteorological and air quality modelling.
Journal ArticleDOI
The effects of the presence of a kitchen house on the wind flow surrounding a low-rise building
TL;DR: In this paper, the authors investigated the air flow characteristics changes surrounding these houses as a result of the presence of the kitchen and found that the kitchen position at the center resulted in a slight increase in the suction on the ridge of the roof, but it significantly altered the flow pattern in the windward and leeward directions.
Book ChapterDOI
Application of Meteorological Data in Computational Modelling of Wind over Real Terrain Topography
K. Wędołowski,K. Bajer +1 more
TL;DR: In this paper, the authors analyse the effect of the local flow on the wind direction on wind energy assessment in a complex terrain and propose a model for a particular site in a moderately complex terrain, where they combine a Numerical Weather Prediction (NWP) model with additional small scale model.
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.