contributor author | Yoji Okita | |
contributor author | Masakazu Nishiura | |
date accessioned | 2017-05-09T00:26:11Z | |
date available | 2017-05-09T00:26:11Z | |
date copyright | April, 2007 | |
date issued | 2007 | |
identifier issn | 0889-504X | |
identifier other | JOTUEI-28736#331_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/137041 | |
description abstract | This paper presents the first experimental and numerical work of film effectiveness performance for a novel film-cooling method with an arrowhead-shaped hole geometry. Experimental results demonstrate that the proposed hole geometry improves the film effectiveness on both suction and pressure surface of a generic turbine airfoil. Film effectiveness data for a row of the holes are compared to that of fan-shaped holes at the same inclination angle of 35 deg to the surface on a large-scale airfoil model at engine representative Reynolds number and Mach number in a high-speed tunnel with moderately elevated temperature mainstream flow. The film effectiveness data are collected using pressure-sensitive paint. Numerical results show that the coolant film with the proposed hole geometry remains well attached to the surface and diffuses in the lateral direction in comparison with the conventional laidback fan-shaped holes for coolant to mainstream blowing ratios of 0.6–3.5. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Film Effectiveness Performance of an Arrowhead-Shaped Film-Cooling Hole Geometry | |
type | Journal Paper | |
journal volume | 129 | |
journal issue | 2 | |
journal title | Journal of Turbomachinery | |
identifier doi | 10.1115/1.2437781 | |
journal fristpage | 331 | |
journal lastpage | 339 | |
identifier eissn | 1528-8900 | |
keywords | Pressure | |
keywords | Flow (Dynamics) | |
keywords | Cooling | |
keywords | Coolants | |
keywords | Geometry | |
keywords | Airfoils AND Suction | |
tree | Journal of Turbomachinery:;2007:;volume( 129 ):;issue: 002 | |
contenttype | Fulltext | |