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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Coupled WRF-OpenFOAM study of wind flow over complex terrain
TL;DR: In this paper, a new planetary boundary layer (PBL) parameterization scheme was proposed for coupling purposes, which can be applied to the whole atmospheric boundary layer, not only to the surface layer.
Journal ArticleDOI
Intercomparison of wind-driven rain deposition models based on two case studies with full-scale measurements
Bje Bert Blocken,M Abuku,Kristine Nore,Kristine Nore,PM Petra Briggen,HL Henk Schellen,Jan Vincent Thue,Staf Roels,Jan Carmeliet,Jan Carmeliet +9 more
TL;DR: In this article, three different calculation models for wind-driven rain (WDR) on buildings are compared for two case studies for which full-scale measurements are available, and the agreement between the CFD results and the measurements is on average 20-25%.
Journal ArticleDOI
Large eddy simulation of the neutral atmospheric boundary layer: performance evaluation of three inflow methods for terrains with different roughness
TL;DR: In this paper, the combined effect of inflow method and aerodynamic roughness length for large eddy simulations (LES) of the atmospheric boundary layer (ABL) is investigated, and three basic inflow generators in combination with three terrain types are evaluated in terms of streamwise homogeneity of the vertical profiles of mean velocity and turbulence kinetic energy.
Journal ArticleDOI
Application of CFD in Modelling Wind-Induced Natural Ventilation of Buildings - A Review
TL;DR: In this paper, the authors reviewed the application of CFD for designing and parametric studies of wind-induced natural ventilation and showed that the whole-domain approach is more popular than the domain-decoupled approach, and with efficient computing algorithms, grid generation techniques and advances in hardware technology, can overcome the computational overhead it incurs during application.
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Effects of roadway configurations on near-road air quality and the implications on roadway designs
Jonathan T. Steffens,David Heist,Steven G. Perry,Vlad Isakov,Richard Baldauf,Richard Baldauf,K. Max Zhang +6 more
TL;DR: In this paper, the authors present an analysis of wind tunnel experiments of twelve different roadway configurations and modeling of these configurations using a Large-Eddy Simulation (LES) model, aiming at investigating how flow structures affect the impact of roadway features on near-road and on-road air quality.
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.
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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.