Effects of flow turbulence on film cooling efficiency

Abstract

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 language	English
Pages (from-to)	2117-2125
Number of pages	9
Journal	International Journal of Heat and Mass Transfer
Volume	38
Issue number	11
DOIs	https://doi.org/10.1016/0017-9310(94)00323-N
Publication status	Published - 1 Jan 1995
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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title = "Effects of flow turbulence on film cooling efficiency",

abstract = " 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.",

author = "Lebedev, {V. P.} and Lemanov, {V. V.} and Misyura, {S. Ya} and Terekhov, {V. I.}",

year = "1995",

month = jan,

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doi = "10.1016/0017-9310(94)00323-N",

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TY - JOUR

T1 - Effects of flow turbulence on film cooling efficiency

AU - Lebedev, V. P.

AU - Lemanov, V. V.

AU - Misyura, S. Ya

AU - Terekhov, V. I.

PY - 1995/1/1

Y1 - 1995/1/1

N2 - 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.

AB - 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.

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