대한기계학회논문집 (Transactions of the Korean Society of Mechanical Engineers)
- 제18권3호
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- Pages.645-652
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- 1994
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- 1225-5963(pISSN)
DOI QR Code
자유유동 난류강도가 원형 곡면위의 분사홀 상류에서의 막냉각에 미치는 영향에 대한 연구
Effect of Free-Stream Turbulence on Film-Cooling Upstream of Injection Hole on a Cylindrical Surface
- Seo, Hyeong-Joon ;
- Kuk, Keon ;
- Lee, Joon-Sik ;
- Lee, Sang-Woo
- 발행 : 1994.03.01
초록
The leading edge of a turbine blade was simulated as a circular cylindrical surface. The effect of free-stream turbulence on the mass transfer upstream of the injectionhole has been investigated experimentally. The effects of injection location, blowing ratio on the Sherwood number distribution were examined as well. The mass transfer coefficients were measured by a naphthalene sublimation technique. The free-stream Reynolds number based on the cylinder diameter is 53,000. Other conditions investigated are: free-stream turbulence intensities of 3.9% and 8.0%, injection locations of
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