Numerical prediction of wind loading on buildings and structures — Activities of AIJ cooperative project on CFD

Tamura, Tetsuro; Kawai, Hiroyuki; Kawamoto, Shinji; Nozawa, Kojiro; Sakamoto, S.; Ohkuma, Takeshi

doi:10.1016/s0167-6105(97)00109-8

Cited by 23 publications

(12 citation statements)

References 5 publications

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“…σ u Exp by CN (Tamura et al,1997) Exp by KJ (Tamura et al,1997) Exp by Ky (Tamura et al,1997) Exp by NH (Tamura et al,1997) Exp by SM (Tamura et al,1997) Exp by TD (Tamura et al,1997) Present comp in the previous experimental researches (Kawai, 1997(Kawai, , 1999Banks et al, 2000), are reproduced in the present computation.…”

Section: Computational Modelsupporting

confidence: 71%

“…According to the report by Tamura et al (1997), it is not easy to simulate the pressure characteristics on the flat-roofed building especially when flow attacks oblique to the roof. Almost all RANS models could not reproduce the negative pressure associated with the conical vortex.…”

Section: Introductionmentioning

confidence: 99%

“…However, they could not simulate the location of the large suction associated with the unsteady motion of the conical vortices. Tamura et al (1997) point out that the numerical scheme has an important role for the results through the discussion of future subject for the development of CFD.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

LES analysis of unsteady characteristics of conical vortex on a flat roof

Ono

Tamura

Kataoka

2008

Journal of Wind Engineering and Industrial Aerodynamics

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Section: Computational Modelsupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

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LES analysis of unsteady characteristics of conical vortex on a flat roof

Ono

Tamura

Kataoka

2008

Journal of Wind Engineering and Industrial Aerodynamics

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“…In contrast to the fairly large number of efforts towards BPG for RANS for outdoor building simulation applications, such efforts for LES simulations are rather scarce. In the framework of the AIJ, Tamura et al (2008) provided an initial guide for the numerical prediction of wind loads on buildings based on an earlier extensive cooperative project (Tamura et al 1997). Gousseau et al (2013) provided a detailed solution verification and validation study leading to guidelines for wind flow around an isolated high-rise building.…”

Section: Best Practice Guidelines For Outdoor Applicationsmentioning

confidence: 99%

LES over RANS in building simulation for outdoor and indoor applications: A foregone conclusion?

2018

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Large Eddy Simulation (LES) undeniably has the potential to provide more accurate and more reliable results than simulations based on the Reynolds-averaged Navier-Stokes (RANS) approach. However, LES entails a higher simulation complexity and a much higher computational cost. In spite of some claims made in the past decades that LES would render RANS obsolete, RANS remains widely used in both research and engineering practice. This paper attempts to answer the questions why this is the case and whether this is justified, from the viewpoint of building simulation, both for outdoor and indoor applications. First, the governing equations and a brief overview of the history of LES and RANS are presented. Next, relevant highlights from some previous position papers on LES versus RANS are provided. Given their importance, the availability or unavailability of best practice guidelines is outlined. Subsequently, why RANS is still frequently used and whether this is justified or not is illustrated by examples for five application areas in building simulation: pedestrian-level wind comfort, near-field pollutant dispersion, urban thermal environment, natural ventilation of buildings and indoor airflow. It is shown that the answers vary depending on the application area but also depending on other-less obvious-parameters such as the building configuration under study. Finally, a discussion and conclusions including perspectives on the future of LES and RANS in building simulation are provided.

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“…Recently, prediction of the wind environment around a high-rise building using Computational Fluid Dynamics (CFD) has been carried out at the practical design stage. The performance of CFD prediction of flow around a bluff body based on various turbulence models has been investigated by many authors [1][2][3][4][5]. However, these previous researches focused mainly on the prediction accuracy of the separating flow and pressure distribution around the roof.…”

Section: Introductionmentioning

confidence: 99%

Cross Comparisons of CFD Results of Wind Environment at Pedestrian Level around a High-rise Building and within a Building Complex

Tominaga

Mochida

Shirasawa

et al. 2004

Journal of Asian Architecture and Building Engineering

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Recently, prediction of the wind environment around a high-rise building using Computational Fluid Dynamics (CFD) has been carried out at the practical design stage. However, very few studies have examined the accuracy of CFD including the velocity distribution at pedestrian level. Thus, a working group for CFD prediction of the wind environment around a building was organized by the Architectural Institute of Japan (AIJ). This group consisted of researchers from several universities and private companies. In the first stage of the project, the working group planned to carry out cross comparison of CFD results of flow around a single high-rise building model placed within the surface boundary layer and flow within a building complex in an actual urban area obtained from various numerical methods. This was done in order to clarify the major factors affecting prediction accuracy. This paper presents the results of this comparison.

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Numerical prediction of wind loading on buildings and structures — Activities of AIJ cooperative project on CFD

Cited by 23 publications

References 5 publications

LES analysis of unsteady characteristics of conical vortex on a flat roof

LES analysis of unsteady characteristics of conical vortex on a flat roof

LES over RANS in building simulation for outdoor and indoor applications: A foregone conclusion?

Cross Comparisons of CFD Results of Wind Environment at Pedestrian Level around a High-rise Building and within a Building Complex

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