2010 Fiscal Year Final Research Report
Instantaneous Three-Dimensional Vortex Structure and Heat Transfer of Turbulent Flow in Expanding Concentric Annular Flow-Passage with Rotating Inner-Wall
| Project/Area Number |
20560147
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
MURATA Akira Tokyo University of Agriculture and Technology, 大学院・工学研究院, 教授 (60239522)
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| Co-Investigator(Renkei-kenkyūsha) |
IWAMOTO Kaoru 東京農工大学, 大学院・工学研究院, 准教授 (50408712)
SAITO Hiroshi 東京農工大学, 工学府, 技術専門職員 (40401450)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 流体工学 / 可視化 / 不安定流れ / 計算流体力学 / 粒子画像流速計 / ラージエディシミュレーション / 乱流 |
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| Research Abstract |
Five flow passages of concave, convex, conical, cylindrical, and disk types were examined for their turbulence behavior. In these passages, multiple flow-instability factors can simultaneously affect the flow. Large Eddy Simulation (LES), Direct Numerical Simulation (DNS), and Particle Tracking Velocimetry (PTV) measurement were performed. The effects of through-flow Reynolds number, Taylor number, and geometry of flow passages on instantaneous three-dimensional vortex structure, turbulence statistics, and heat transfer coefficients were clarified.
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