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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A model-based data-interpretation framework for improving wind predictions around buildings
TL;DR: In this paper, the authors proposed a data-interpretation framework that uses multiple simulations in combination with measurement data to improve the accuracy of wind predictions, which is applied to the case study of the CREATE Tower located at the National University of Singapore.
Journal ArticleDOI
Comparison of urban airflow between solar-induced thermal wall and uniform wall temperature boundary conditions by coupling CitySim and CFD
TL;DR: In this paper, the authors investigated different scenarios to identify whether the solar-induced non-uniform wall temperatures could be replaced by the uniform wall temperatures in the analysis of urban wind airflow and the wind conditions that the wall thermal boundary conditions might be neglected.
Journal ArticleDOI
Using CFD to improve the irrigation strategy for growing ornamental plants inside a greenhouse
TL;DR: In this article, a 2D transient CFD model was implemented, including a specific sub-model taking into account the water transport in the substrate-plant-atmosphere continuum, as well as the resulting crop interactions with the greenhouse climate for both well-watered and restricted water conditions.
Nonlinear Eddy Viscosity Models applied to Wind Turbine Wakes
van der Paul Maarten Laan,Niels N. Sørensen,Pierre-Elouan Réthoré,Jakob Mann,Mark C. Kelly,J.G. Schepers +5 more
TL;DR: In this article, the linear k− ε eddy viscosity model and modified versions of two existing nonlinear eddy models were applied to single wind turbine wake simulations using a Reynolds Averaged Navier-Stokes code.
Wind-Structure Interaction Simulations of Ovalling Vibrations in Silo Groups (Windstructuurinteractiesimulaties van ovaliserende trillingen in silogroepen)
TL;DR: In this article, three-dimensional numerical simulations are used to investigate the complex case of wind-structure interaction, and it is shown that the aerodynamic loading and vibration amplitudes are considerably larger for silos in the group than for a single isolated silo.
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.