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A Numerical Investigation of External and Internal Heat Transfer in A High Subsonic in Turbine Cascade  

Kim, Woo-Jin (동서울대학 항공자동차기계공학부)
Kim, Hyun-Shik (한국항공대학교)
Kwak, Jae-Su (한국항공대학교)
Kim, Hark-Bong (한국항공대학교 항공우주 및 기계공학부)
Publication Information
Journal of the Korean Society for Aviation and Aeronautics / v.18, no.1, 2010 , pp. 33-38 More about this Journal
Abstract
Developments of numerical methods are very important to design and analysis for a high subsonic turbine blade. In general, Analysis by experimental investigation has needed a lot of human resources and required time, indispensably, and equipments still have a limit to measure in conditions of high temperature. Rapid technological developments of CPU and integration level of memory make it possible to advance computation with almost exactly simulation so, recent developments of numerical methods are in spotlight. In the present study, the panel method, which is well-known as relatively simplified numerical method, and 2-dimensional ordinary differential Falkner-Skan equation were computed in order to analyze the outer flow, and FVM-based solid heat transfer equation, was also computed to forecast the temperature distribution of the airfoil and the turbine blade. Unstructured grid was constructed in the turbine blade, which has double cooling holes, in order to analyze the internal heat transfer. Cooling fluid was assumed as fully-developed turbulent flow and that circulated in cooling holes.
Keywords
Turbine Blade; Panel Method; Unstructured Grid; Laminar Separation;
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Times Cited By KSCI : 1  (Citation Analysis)
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