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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Bayesian calibration of the constants of the k–ε turbulence model for a CFD model of street canyon flow
TL;DR: In this article, the authors carry out a Bayesian calibration for uncertainty analysis in Computational Fluid Dynamics modelling of urban flows, taking the case of airflow in a regular street canyon, and choosing turbulent kinetic energy (TKE) as their quantity of interest, calibrate 3D CFD simulations against wind tunnel observations.
Journal ArticleDOI
Mesoscale to microscale wind farm flow modeling and evaluation
Javier Sanz Rodrigo,Roberto Aurelio Chávez Arroyo,Patrick Moriarty,Matthew J. Churchfield,Branko Kosovic,Pierre-Elouan Réthoré,Kurt Schaldemose Hansen,Andrea N. Hahmann,Jeffrey D. Mirocha,Daran L. Rife +9 more
TL;DR: In this paper, a framework for model verification, validation, and uncertainty quantification is established to guide this process by a systematic evaluation of the modeling system at increasing levels of complexity.
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Parametric study of the influence of environmental factors and tree properties on the transpirative cooling effect of trees
Lento Manickathan,Lento Manickathan,Thijs Defraeye,Thijs Defraeye,Jonas Allegrini,Jonas Allegrini,Dominique Derome,Jan Carmeliet,Jan Carmeliet +8 more
TL;DR: In this article, vegetation is modelled as a porous medium in a computational fluid dynamics model for flow of moist air, where a leaf energy balance model is used to determine the heat fluxes.
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Pedestrian wind conditions at outdoor platforms in a high-rise apartment building: generic sub-configuration validation, wind comfort assessment and uncertainty issues
Bje Bert Blocken,Jan Carmeliet +1 more
TL;DR: In this paper, the authors applied CFD to evaluate pedestrian wind comfort at outdoor platforms in a high-rise apartment building, where the comfort study is performed during the design stage, which allows structural design changes to be made for wind comfort improvement.
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A Comprehensive Modelling Approach for the Neutral Atmospheric Boundary Layer: Consistent Inflow Conditions, Wall Function and Turbulence Model
Alessandro Parente,Alessandro Parente,Catherine Gorle,Catherine Gorle,Jeroen van Beeck,C. Benocci +5 more
TL;DR: In this paper, a novel approach for the Reynolds-averaged Navier-Stokes (RANS) modelling of the neutral atmospheric boundary layer (ABL), using the standard k-varepsilon turbulence model, is presented.
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.