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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Journal ArticleDOI
Study on the Self-Sustaining Inlet Boundary Conditions for Numerical Simulation on Local Scour
Peng Yu,Junfeng Liu,Zewen Sun +2 more
TL;DR: In previous numerical simulations of local scour, the steady flow is normally adopted as the inlet boundary condition, and the approach flow is always assumed as a homogeneous isotropic tu... as discussed by the authors.
Journal ArticleDOI
Experimental investigation of wind impact on low-rise elevated residences
TL;DR: In this article , the peak pressure coefficients and wind forces on the building roof, walls, and floor underside were investigated, and the experimental program was supplemented by numerical simulations using Computational Fluid Dynamics (CFD) to assess the airflow around the model.
Proceedings ArticleDOI
Analysis of Two Kinds of Boundary Conditions for Simulating Horizontally Homogenous Atmosphere Boundary Layer Based on the Standard K-ε Turbulence Model
TL;DR: In this article, two boundary conditions and model constants were applied to simulate class A wind field, which is suggested by the Chinese Wind-resistant Design Specification for Highway Bridges, in full scale with Fluent.
Journal ArticleDOI
umerical simulation of atmospheric boundary layer and wakes of horizontal-axis wind turbines
TL;DR: In this paper, a simulation of wind turbine wakes is presented using the three-dimensional Reynolds-Averaged Navier-Stokes (RANS) equations employing the k-e turbulence model appropriately modified for the atmospheric flows.
Journal ArticleDOI
Experimental and numerical studies on the performance and surface streamlines on the blades of a horizontal-axis wind turbine
TL;DR: In this article, the aerodynamic forces of a SD8000 airfoil (representing the sectional blade shape) in the steady-state conditions were first predicted using an incompressible Reynolds-averaged Navier-Stokes solver with the γ-ReAvg θt and k-kAvg L−ω transition models.
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.