2016 Fiscal Year Final Research Report
Studies on Advanced Film Cooling Technologies by use of Robust Flow-Control Devices
| Project/Area Number |
26420098
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Iwate University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | Robust Optimization / Gas Turbine / Film Cooling / CFD / PSP Measurement |
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| Outline of Final Research Achievements |
Attempts were made to optimize double flow control devices (DFCD) for achieving better film cooling performance of gas turbine cooling holes. Although the device was formerly proven to improve film effectiveness dramatically, CFD-based Taguchi Method was made to optimize the shape and configuration of the device for the flow with the inlet flow angle adopted as noise factor. In the experiment, we employ CO2 as the cooling air to achieve the flow condition of DR=1.5, which allows us to measure the film effectiveness by PSP technique. The film coverage was notably improved by use of DFCDs, regardless of the flow angle. It was found that the film cooling enhancement was caused by changes of the vortex structure. The performance of the optimal device was then checked by the comparison with no device cases. The optimal device showed overwhelming cooling performance through the PSP measurement in the wind tunnel test.
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| Free Research Field |
流体工学
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