Experimental Study on Control of the Wall Turbulence with Spanwise Discontinuity of Surface Roughness
| Project/Area Number |
20560162
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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 | Yamaguchi University |
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Principal Investigator |
MOCHIZUKI Shinsuke Yamaguchi University, 大学院・理工学研究科, 教授 (70190957)
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| Co-Investigator(Kenkyū-buntansha) |
KAMEDA Takatsugu 山口大学, 大学院・理工学研究科, 准教授 (70304491)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2008: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | 二次流れ / 粗面 / 乱流 / 内部流れ / チャネル流 / 乱流工学 / 粗度 |
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| Research Abstract |
An experimental study shows existence of longitudinal vortex by spanwise discontinuity of surface roughness and its producing mechanisms. The longitudinal vortex is generated along the discontinuity of surface roughness and induces secondary current. Evaluation of production terms in the transport equation of the longitudinal vorticity reveals that turbulence distributions contribute to the vorticity production. This finding could be applied to vortex generator without protrusion height.
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Report
(4 results)
Research Products
(19 results)
