High-Resolution Skin-Friction Measurement Technique Based onOptical Flow Algorithm
| Project/Area Number |
23656126
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Fluid engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
ASAI Keisuke 東北大学, 大学院・工学研究科, 教授 (40358669)
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| Co-Investigator(Kenkyū-buntansha) |
NUMATA Daiju 東北大学, 大学院・工学研究科, 助教 (20551534)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 流体計測 / オプチカルフロー / せん断応力 / 流れの可視化 / 画像処理 / 蛍光油膜 / 可視化 |
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| Research Abstract |
As a tool for visualizing two-dimensional skin-friction distribution on model surfaces, a new technique named “Global Luminescent Oil-Flow (GLOF)" technique has been developed. This method uses “optical flow" technique and extracts skin-friction vector field from time-series of oil-flow images. The accuracy and resolution of this technique were evaluated by applying to square cylinder and NACA-0012 airfoil testing. We found that GLOF allows us to measure skin friction distribution under the complex flow field including the reverse-flow region of a laminar separation bubble.
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Report
(3 results)
Research Products
(19 results)
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[Presentation] 低Re数翼の空力特性に対する乱流装置の効果2012
Author(s)
中村勘太,依田大輔,沼田大樹,姜欣,近野敦,浅井圭介
Organizer
日本航空宇宙学会北部支部2012年講演会ならびに第13回再使用型宇宙推進系シンポジウム
Place of Presentation
室蘭工業大学,北海道
Year and Date
2012-03-15
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