PREDICTABILITY OF UNSTEADY TWO-DIMENSIONAL .KAPPA.-.EPSILON. MODEL ON THE AERODYNAMIC INSTABILITIES OF BASIC STRUCTURAL CROSS-SECTIONS
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- SHIMADA Kenji
- 清水建設（株）技術研究所
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- ISHIHARA Takeshi
- 東京大学 大学院工学系研究科社会基盤学専攻
Bibliographic Information
- Other Title
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- 構造基本断面の空力不安定振動応答評価に関する二次元非定常κ－εモデルの適用性の検討
- PREDICTABILITY OF UNSTEADY TWO-DIMENSIONAL κ−ε MODEL ON THE AERODYNAMIC INSTABILITIES OF BASIC STRUCTURAL CROSS-SECTIONS
Abstract
It is well known that a bluff body cross-section exhibits various kinds of aeroelastic instabilities such as vortex induced vibration, galloping and torsional flutter. Since these cross-sections are used in a long span bridge and tall building, it is important to predict their occurrence in wind resistant structural design. In this paper, the authors made a series of comparisons of unsteady wind forces, unsteady pressure distributions and free vibration responses between the previously conducted studies and the unsteady two-dimensional unsteady κ−ε model for rectangular cross-sections with cross sectional ratio of 2 and 4 in a smooth uniform flow in order to verify computational predictability of aeroelastic instabilities. As a result, the computation could successfully predict the onset velocity and response of these aeroelastic instabilities.
Journal
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- Doboku Gakkai Ronbunshuu A
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Doboku Gakkai Ronbunshuu A 65 (3), 554-567, 2009
Japan Society of Civil Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390001205253679488
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- NII Article ID
- 130004942774
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- ISSN
- 18806023
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed