计算机辅助绘图设计与制造（英文版）
計算機輔助繪圖設計與製造（英文版）
계산궤보조회도설계여제조（영문판）
CADDM
2010年
2期
30-35
,共6页
turbine blade film cooling%shaped hole%antivortex hole%film cooling effectiveness%blowing ratio%k-Epsilon turbulence model
Film cooling is introduction of a secondary fluid(coolant or injected fluid)at one or more discrete locations along a surface exposed to a high temperature environment to protect that surface not only in the immediate region of injection but also downstream region.This paper numerically investigated the film cooling effectiveness on two types of hole geometries which are cut-shaped hole and antivortex hole.The 3D computational geometries are modeled with a single 30 deg angled hole on a flat surface.The different blowing ratios of 0.5,1,1.5,2,2.5,3,3.5,4,4.5,5 and k-Epsilon turbulence model are used in this study.A two dimensional distribution of film cooling effectiveness in the downstream region of the cooling hole is performed.A comparison of spanwise averaged effectiveness is also performed in the field starts from center point of hole to X/D=30.
