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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Influence of pressure recovery on the performance of an induced draught air-cooled condenser under windless and windy conditions
TL;DR: In this paper , two conical diffusers are attached to the outlets of a 20-fan induced draught air-cooled condenser (ACC) to facilitate pressure recovery, which is the conversion of the dynamic pressure loss at the fan outlets into static pressure.
Journal ArticleDOI
Pedestrian environment prediction with different types of on-shore building distribution
Xiao-cheng Song,Jing Liu,Lei Yu +2 more
TL;DR: In this paper, different turbulence models, including the S-A, SKE, RNG, Realizable, Low-KE and RSM model, were evaluated, and the CFD results were compared with wind tunnel experiment.
Journal ArticleDOI
A comparison of major steady RANS approaches to engineering ABL simulations
TL;DR: In this paper , a computational evaluation of the shear stress-driven, pressure-driven and body-force-driven EABL flows was performed using the open-source CFD code OpenFOAM®.
Journal ArticleDOI
A POD-DMD augmented analysis procedure to isolating dominant flow field structures in a street canyon
Yunfei Fu,Xisheng Lin,Lu Li,Qi Chu,Haiqing Liu,Xing Zheng,Chun-Ho Liu,Zengshun Chen,Chongjia Lin,Kwong T. Tse,Cruz Y. Li +10 more
TL;DR: In this paper , the authors developed a data analysis procedure, namely Proper Orthogonal Decomposition (POD)-Dynamic Mode Decompposition (DMD) augmented analysis, to isolate the energy and evolution-wise dominant features of flow field in a street canyon.
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Experimental and numerical characterization of wind-induced pressure coefficients on nuclear buildings and chimney exhausts
TL;DR: In this article, the authors used a steady RANS approach and a two-equation SST k-ω turbulence model to simulate the wind effect on the building walls and the interaction between the wind and chimney exhaust.
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.