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Title :建物後方の周期的変動と再付着距離の予測精度に関する検討 : LESによる高層建物周辺気流の解析(その1)
Title alternative :EFFECT OF PERIODIC FLUCTUATION BEHIND BUILDING ON REATTACHMENT LENGTH : Large eddy simulation of flowfield around a high-rise building (Part 1)
Authors :富永, 禎秀
持田, 灯
村上, 周三
佐脇, 哲史
Publisher :日本建築学会
Issue Date :Jul-2004
Journal Title :日本建築学会環境系論文集
Volume :581
Start Page :45
End Page :51
ISSN :1348-0685
Abstract :Computations based on Large Eddy Simulation(LES) with and without inflow turbulence are applied to the flowfield around a high-rise building model. The results are compared with those of the experiments and a revised k-ε model in order to clarify the effect of the velocity fluctuations at the inflow boundary on the prediction accuracy of time-averaged velocity fields around the building. Special attention is paid to the prediction accuracy for reproducing the flow behind the building. The results of the LES with inflow turbulence showed generally good agreement with experiment in terms of the distributions of velocity and turbulence energy in this region. This improvement results mainly fom the fact that the periodic velocity fluctuation behind the building is well reproduced in this case.
Keywords :Large Eddy Simulation
High-rise building
Periodic fluctuation
Reattachment length
高層建物モデル
周期的変動
再付着距離
Type Local :Journal Article
Language :jpn
URI :http://hdl.handle.net/10623/33654
Relation :http://ci.nii.ac.jp/naid/110004083843
Rights :社団法人日本建築学会
本文データは学協会の許諾に基づきCiNiiから複製したものである
Appears in Collections:10 査読済論文 = Postprint

Please use this identifier to cite or link to this item: http://hdl.handle.net/10623/33654

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