Effects of flow turbulence on film cooling efficiency

V. P. Lebedev, V. V. Lemanov, S. Ya Misyura, V. I. Terekhov

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35 Citations (Scopus)


Results of experimental investigations on film cooling effectiveness in high-turbulent flow are represented in this paper. The turbulence intensity changed within the range Tu o = 0.2-15% and the injection parameter was 0.1 < m < 2.5. It has been established that at small injection parameters (m < 1) the high-turbulence intensity of flow results in a significant decrease (down to 400-500%) of the film cooling effectiveness compared to low-turbulence flow. At big injection parameters (m > 1) the turbulence effect weakens. The experimental data generalization and its comparison with the results of the calculation carried out by asymptotic theory are given.

Original languageEnglish
Pages (from-to)2117-2125
Number of pages9
JournalInternational Journal of Heat and Mass Transfer
Issue number11
Publication statusPublished - 1 Jan 1995
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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