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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Wind-driven rain on two parallel wide buildings: Field measurements and CFD simulations
Aytaç Kubilay,Aytaç Kubilay,Dominique Derome,Dominique Derome,Bert Blocken,Bert Blocken,Jan Carmeliet,Jan Carmeliet +7 more
TL;DR: In this paper, the authors report detailed field measurements and numerical simulations of wind-driven rain that are conducted for an idealized geometry with two parallel wide buildings with different heights, located in Dubendorf, Switzerland.
Journal ArticleDOI
Modelling heat and mass transfer of a broiler house using computational fluid dynamics
Fernando Rojano,Pierre-Emmanuel Bournet,Melynda Hassouna,Paul Robin,Murat Kacira,Christopher Y. Choi +5 more
TL;DR: In this article, a two dimensional CFD model was used to assess the dynamics of a broiler house by investigating sensible and latent heat, as well as mass transport and radiative transfer energy.
Journal ArticleDOI
Autonomous vehicles opportunities for cities air quality.
Sandra Rafael,Luís P. Correia,Diogo Lopes,Jorge M. Bandeira,Margarida C. Coelho,Mário Andrade,Carlos Borrego,Ana Isabel Miranda +7 more
TL;DR: Overall the results showed that AV have the potential to improve urban air quality, but, further research is needed to enrich the findings of this work.
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Computational Analysis of Wind-Driven Natural Ventilation in a Two Sided Rectangular Wind Catcher
TL;DR: In this article, the authors evaluated the performance of wind catchers as a natural ventilation system attached to buildings in order to ventilate the indoor air, and designed and evaluated a wind catcher as an indoor air conditioning system.
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Computer modelling of downwind sails
TL;DR: In this article, a finite volume software package CFDS-FLOW3D was used to model the flow around a spinnaker/mainsail combination, and the difference between the computed and wind tunnel results were 15% for lift and 3% for drag.
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.