| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
In this study, usual oil film interferometry (OFI) is developed as practical tool for wind tunnel test. It is confirmed that the OFI method under the 1mm diameter of droplet is effective for local friction measurement compared to under the 5mm diameter of droplet. Also, painting method instead of dropping is carried out for skin friction measurement on vertical surface. Local skin friction measurements on suction surface of an NACA0012 airfoil are carried out by the OFI method improved in this study. The airfoil is manufactured by famous processing of a metal and it is attached by commercial film without necessary for special processing to surface. The results are acquired that the difference of local friction coefficient between by the OFI measurement and by numerical simulation in other research has less than about 3% on suction surface from reattached position to trailing edge of the airfoil.
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