Numerical investigation of heat transfer on film cooling with shaped holes

X. Z. Zhang, Ibrahim Hassan

Research output: Contribution to journalArticle

21 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)848-869
Number of pages22
JournalInternational Journal of Numerical Methods for Heat and Fluid Flow
Volume16
Issue number8
DOIs
Publication statusPublished - 2006
Externally publishedYes

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Keywords

  • Cooling
  • Films (states of matter)
  • Heat transfer

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Computer Science Applications
  • Applied Mathematics

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