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Numerical investigation of heat transfer on film cooling with shaped holes

X.‐Z. Zhang (Department of Mechanical and Industrial Engineering, Concordia University, Montréal, Québec, Canada)
I. Hassan (Department of Mechanical and Industrial Engineering, Concordia University, Montréal, Québec, Canada)

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Article publication date: 1 December 2006

799

Abstract

Purpose

To develop a reliable methodology and procedure of simulating the jet‐in‐crossflow using the current turbulence models and numerically investigate the cooling performance of a new scheme for the engines of next generation.

Design/methodology/approach

A new advanced film cooling scheme is proposed based on the literature survey and a systematic methodology developed to successfully predict the right level of heat transfer in the CFD simulation of film cooling.

Findings

The proposed cooling scheme gives considerable lower heat transfer coefficient at the centerline in the near hole region than the traditional cylindrical hole, especially at a high blowing ratio when traditional cylindrical hole undergoes liftoff.

Research limitations/implications

The number of cooling holes in the computational domain is limited by the speed of the computers used.

Practical implications

The new methodology can be used to numerically test new cooling schemes in the design of turbine blades and to provide useful information/data under actual working conditions to design engineers.

Originality/value

This paper provides some useful information on the simulation of film cooling in terms of the performance of different turbulence models and wall treatments and also sends some valuable messages regarding the design of cooling scheme of turbine blades to the technical community.

Keywords

Citation

Zhang, X.‐. and Hassan, I. (2006), "Numerical investigation of heat transfer on film cooling with shaped holes", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 16 No. 8, pp. 848-869. https://doi.org/10.1108/09615530610702032

Publisher

:

Emerald Group Publishing Limited

Copyright © 2006, Emerald Group Publishing Limited

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