Numerical Analysis on Heat Transfer Characteristics of the Contoured Endwall in a Turbine Cascade

끝벽의 형상이 터빈 캐스케이드 내 열전달 특성에 미치는 영향에 관한 전산해석

The Objective of this study is to document the three-dimensional flow in a turbine cascade with Contoured endwall in terms of Stanton number distribution to proposes an appropriate contraction ratio of endwall contouring which show the best performance. This study was numerically performed. The results show that heat transfer coefficient on the contoured endwall which has the height of 15% of the axial chord showed best performance. The numerical method and results in this study can be applied to the design of gas turbine cascade with high performance.