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Title :Dynamic Subgrid-scale Model に基づく LES による2次元角柱周辺流れの解析
Title alternative :Large Eddy Simulation of Turbulent Flow past 2D Square Cylinder using Dynamic SGS Model
Authors :富永, 禎秀
村上, 周三
持田, 灯
小林, 光
Publisher :日本風工学会
Issue Date :1994
Journal Title :風工学シンポジウム論文集
Volume :13
Start Page :527
End Page :530
Abstract :A turbulent vortex-shedding flow past a two-dimensional(2D) square cylinder at RE=2.2x10^4 is analyzed by Large Eddy Simulation(LES) using the dynamic Subgrid-scale(SGS)model. Here, the dynamic SGS model is incorporated into the second-order finite volume method. Results from the dynamic SGS model are compared with those from the standard Smagorinsky model and the experiments conducted by Lyn(1989). The dynamic SGS model improves the accuracy of the predictions remarkably. The mean velocity distribution given by the dynamic SGS model shows very close agreement with the experiment in the wake region, while the standard Smagorinsky model somewhat underestimates the size of the reverse flow region behind the cylinder.
Keywords :Vortex Shedding
LES
Dynamic SGS model
Square Cylinder
Type Local :Conference Paper
Language :jpn
URI :http://hdl.handle.net/10623/29484
Appears in Collections:08 日本風工学会

Please use this identifier to cite or link to this item: http://hdl.handle.net/10623/29484

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