Document Type

Article

Publication Version

Published Version

Publication Date

7-2009

Journal or Book Title

Journal of Turbomachinery

Volume

131

Issue

3

First Page

article no. 031001

DOI

10.1115/1.2985073

Abstract

This paper presents two low-cost alternatives for turbine blade surface heat transfer and fluid dynamics measurements. These models embody careful compromises between typical academic and full-scale turbomachinery experiments and represent a comprehensive strategy to develop experiments that can directly test shortcomings in current turbomachinery simulation tools. A full contextual history of the wide range of approaches to simulate turbine flow conditions is presented, along with a discussion of their deficiencies. Both models are simplifications of a linear cascade: the current standard for simulating two-dimensional turbine blade geometries. A single passage model is presented as a curved duct consisting of two half-blade geometries, carefully designed inlet and exit walls and inlet suction. This facility was determined to be best suited for heat transfer measurements where minimal surface conduction losses are necessary to allow accurate numerical model replication. A double passage model is defined as a single blade with two precisely designed outer walls, which is most appropriate for flow measurements. The design procedures necessary to achieve a desired flow condition are discussed.

Comments

This article is from Journal of Turbomachinery, 131 (2009): 031001, doi: 10.1115/1.2985073. Posted with permission.

Copyright Owner

ASME

Language

en

File Format

application/pdf

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