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http://dx.doi.org/10.5139/JKSAS.2010.38.9.890

A Study of Operating Forces on a Partially Admitted Turbine Blade  

Cho, Chong-Hyun (경상대학교 항공공학과 대학원)
Choi, Hyoung-Jun (경상대학교 항공공학과 대학원)
Chung, Dae-Hun (한국에너지기술연구원)
Im, Yong-Hoon (한국에너지기술연구원)
Cho, Soo-Yong (경상대 항공기부품기술연구센터)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.38, no.9, 2010 , pp. 890-899 More about this Journal
Abstract
An experimental study has been conducted to analyze the operating forces on a partially admitted turbine blade using a linear cascade apparatus. Axial-type blades were used and the blade chord was 200mm. The rectangular nozzle was applied and its size was $200mm{\times}200mm$. The experiment was done at $3{\times}10^5$ of Reynolds number based on the chord. The rotational force and axial force on the blade were measured at steady state by moving the blade to the rotational direction. The operating forces were measured at three different nozzle install angles of $58^{\circ}$, $65^{\circ}$ and $72^{\circ}$ for off-design performance test. In addition, three different solidities of 1.25, 1.38 and 1.67 were applied. From the results, the maximum rotational force was increased when the solidity was decreased and the nozzle install angle was decreased. The axial force was increased by decreasing the nozzle install angle. The reverse axial force was obtained in the partially admitted region when the nozzle install angle was increased to $72^{\circ}$.
Keywords
Partial Admission; Linear Cascade; Axial Turbine; Turbine Operating Force;
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Times Cited By KSCI : 2  (Citation Analysis)
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