Film Cooling Effectiveness Measurements With Periodic Unsteady Inflow on Highly Loaded Blades With Main Flow Separation-Reference-Cited by-同舟云学术

Film Cooling Effectiveness Measurements With Periodic Unsteady Inflow on Highly Loaded Blades With Main Flow Separation

Published:2010-10-25 Issue:2 Volume:133 Page:
ISSN:0889-504X
Container-title:Journal of Turbomachinery
language:en
Short-container-title:

Author:

Gomes Reinaldo A.,Niehuis Reinhard¹

Affiliation:

1. Institute of Jet Propulsion, University of the Federal Armed Forces Munich, Werner-Heisenberg-Weg 39, 85577 Munich, Germany

Abstract

Abstract Film cooling experiments were performed using a highly loaded high pressure turbine blade blade linear cascade. A large region with main flow separation is found on the pressure side and film cooling is provided into this area with three rows of either cylindrical or fan-shaped holes. The measurements comprise adiabatic film cooling effectiveness and profile static pressure measurements. The surface temperature was acquired with thermochromatic liquid crystals and using a hue to temperature correlation. The results shown are for variations in main flow Mach and Reynolds numbers at engine relevant levels and of coolant mass flows. The results for steady and periodic unsteady inflows with highly turbulent wakes created by cylindrical bars moving upstream in a plane parallel to the cascade are compared as two-dimensional surface plots, laterally averaged film cooling effectiveness and overall effectiveness over the entire surface.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/turbomachinery/article-pdf/133/2/021019/6681452/021019_1.pdf

Reference20 articles.

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