Numerical evaluation of wind effects on a tall steel building by CFD
01 May 2007-Journal of Constructional Steel Research (JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH)-Vol. 63, Iss: 5, pp 612-627
TL;DR: In this paper, a comprehensive numerical study of wind effects on the Commonwealth Advisory Aeronautical Council (CAARC) standard tall building is presented, which explores an effective and reliable approach for evaluation of wind effect on tall buildings by CFD techniques.
About: This article is published in Journal of Constructional Steel Research.The article was published on 2007-05-01. It has received 223 citations till now. The article focuses on the topics: CFD in buildings & Wind speed.
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TL;DR: In this article, wind pressure distribution on buildings was predicted under two scenarios, namely height-width (HW) and height-thickness (HT), for the purpose of correctness comparison, and reliability verification.
Abstract: Knowledge of wind effects is of great significance in structural, environmental, and architectural fields, where excessive relevance among wind pressure, building load, and natural ventilation has been formerly confirmed. Within the scope of high-rise buildings, functions of their layout, separation and height in altering wind pressure have been inquired on purpose, while a few investigations in relation to impacts of plane dimensions have been explored. This study consequently intends to ascertain wind pressure distributions on and around various squared-shaped tall buildings by the application of Computational Fluid Dynamics techniques. To start with, models established by the Common Advisory Aeronautical Research Council (CAARC) were simulated, for the purpose of correctness comparison, and reliability verification. Hereafter, wind pressure distributing on buildings was predicted under two scenarios, namely height-width (HW) and height-thickness (HT). Results evidenced that both HW ratio and HT...
171 citations
Cites background or methods or result from "Numerical evaluation of wind effect..."
...Meanwhile, comparisons were not ideal but still useful to evidence the corrections of present CFD simulation (Huang et al., 2007)....
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...corrections of present CFD simulation (Huang et al., 2007)....
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...It was tested by some scholars in the wind tunnel test (Huang, Luo, & Gu, 2005; Obasaju, 1992) and its value was set as 0.58m in some CFD simulations (Huang et al., 2007)....
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...Huang et al. (2007) presented computational domains for tall buildings and this investigation showed computational domain in Figure 1....
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...As evidenced by previous researchers (Huang et al., 2007; Montazeri & Blocken, 2013; Tominaga et al., 2008), results derived from CFD simulation are always affected by various factors....
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TL;DR: In this article, the effect of cone tip-diameter on the flow field and performance of cyclone separator was investigated computationally and via mathematical models using large eddy simulation (LES).
163 citations
TL;DR: In this paper, the effect of the vortex finder dimensions (both the diameter and length) on the performance and flow field pattern in nine cyclone separators has been investigated computationally using the large eddy simulation (LES).
152 citations
TL;DR: In this article, the authors compared the performances of the Steady Reynolds Averaged Navier-Stokes (SRANS) RNG k-e, Large Eddy Simulation (LES) and Detached Eddy simulation (DES) modeling approaches in simulating the wind flow around an isolated building (with a 1:1:2 shape).
140 citations
TL;DR: In this paper, the simulation of the wind action over the CAARC (Commonwealth Advisory Aeronautical Council) standard tall building model is performed in order to demonstrate the applicability of CFD techniques in the field of wind engineering.
109 citations
References
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TL;DR: In this article, an extended period numerical integration of a baroclinic primitive equation model has been made for the simulation and the study of the dynamics of the atmosphere's general circulation, and the solution corresponding to external gravitational propagation is filtered by requiring the vertically integrated divergence to vanish identically.
Abstract: An extended period numerical integration of a baroclinic primitive equation model has been made for the simulation and the study of the dynamics of the atmosphere's general circulation. The solution corresponding to external gravitational propagation is filtered by requiring the vertically integrated divergence to vanish identically. The vertical structure permits as dependent variables the horizontal wind at two internal levels and a single temperature, with the static stability entering as a parameter. The incoming radiation is a function of latitude only corresponding to the annual mean, and the outgoing radiation is taken to be a function of the local temperature. With the requirement for thermal equilibrium, the domain mean temperature is specified as a parameter. The role of condensation is taken into account only as it effectively reduces the static stability. All other external sources and sinks of heat are assumed to balance each other locally, and are thus omitted. The kinematics are th...
12,952 citations
TL;DR: In this article, a new eddy viscosity model is presented which alleviates many of the drawbacks of the existing subgrid-scale stress models, such as the inability to represent correctly with a single universal constant different turbulent fields in rotating or sheared flows, near solid walls, or in transitional regimes.
Abstract: One major drawback of the eddy viscosity subgrid‐scale stress models used in large‐eddy simulations is their inability to represent correctly with a single universal constant different turbulent fields in rotating or sheared flows, near solid walls, or in transitional regimes. In the present work a new eddy viscosity model is presented which alleviates many of these drawbacks. The model coefficient is computed dynamically as the calculation progresses rather than input a priori. The model is based on an algebraic identity between the subgrid‐scale stresses at two different filtered levels and the resolved turbulent stresses. The subgrid‐scale stresses obtained using the proposed model vanish in laminar flow and at a solid boundary, and have the correct asymptotic behavior in the near‐wall region of a turbulent boundary layer. The results of large‐eddy simulations of transitional and turbulent channel flow that use the proposed model are in good agreement with the direct simulation data.
6,747 citations
TL;DR: In this paper, the subgrid-scale closure method developed by Germano et al. is modified by use of a least squares technique to minimize the difference between the closure assumption and the resolved stresses.
Abstract: The subgrid‐scale closure method developed by Germano et al. is modified by use of a least squares technique to minimize the difference between the closure assumption and the resolved stresses. This modification removes a source of singularity and is believed to improve the method’s applicability.
3,730 citations
TL;DR: In this paper, a subgrid scale model is proposed for large eddy simulations in complex geometries, which accounts for the effects of both the strain and the rotation rate of the smallest resolved turbulent fluctuations.
Abstract: A new subgrid scale model is proposed for Large Eddy Simulations in complex geometries. This model which is based on the square of the velocity gradient tensor accounts for the effects of both the strain and the rotation rate of the smallest resolved turbulent fluctuations. Moreover it recovers the proper y
3 near-wall scaling for the eddy viscosity without requiring dynamic procedure. It is also shown from a periodic turbulent pipe flow computation that the model can handle transition.
2,855 citations
Book•
01 Jan 1977
TL;DR: In this article, a pipe and channel flow flow past a circular cylinder Free convection between parallel walls Equations of motion further basic ideas Dynamical similarity Low and high Reynolds numbers Some solutions of the viscous flow equations Inviscid flow Boundary layers, wakes, and jets Separation and attachment Lift Convection Stratified flow Flow in rotating fluids Instabilities Transition to turbulence in shear flows Turbulence Homogeneous isotropic turbulence Turbulent shear flow convection in horizontal layers Double diffusive free convection Dynamical chaos Experimental methods Applications of fluid dynamics Not
Abstract: Introduction Pipe and channel flow Flow past a circular cylinder Free convection between parallel walls Equations of motion Further basic ideas Dynamical similarity Low and high Reynolds numbers Some solutions of the viscous flow equations Inviscid flow Boundary layers, wakes, and jets Separation and attachment Lift Convection Stratified flow Flow in rotating fluids Instabilities Transition to turbulence in shear flows Turbulence Homogeneous isotropic turbulence Turbulent shear flows Convection in horizontal layers Double diffusive free convection Dynamical chaos Experimental methods Applications of fluid dynamics Notation Problems Hints and answers to problems Bibliography and references Index.
1,745 citations