Development of turbulent impinging jet on a rotating disk

Y. Minagawa; S. Obi

doi:10.1016/j.ijheatfluidflow.2004.05.013

Development of turbulent impinging jet on a rotating disk

Y. Minagawa, S. Obi

Vice-President

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

We conduct detailed velocity measurements in the turbulent boundary layer, which is developed on a rotating disk opposed to a turbulent jet perpendicularly impinged onto it. The effect of rotation is remarkable in both the skew in the mean flow and in the centrifugal force. We propose a non-dimensional parameter that correlates these two effects and classifies the velocity field. We find the modification of the turbulence structure due to the disk rotation in the increase of the normal stress component in the circumferential direction. The increases in the other stress components are found to be indirect, i.e., re-distribution from the circumferential normal stress is the source of modification in the turbulence structure.

Original language	English
Pages (from-to)	759-766
Number of pages	8
Journal	International Journal of Heat and Fluid Flow
Volume	25
Issue number	5
DOIs	https://doi.org/10.1016/j.ijheatfluidflow.2004.05.013
Publication status	Published - 2004 Oct

Keywords

Centrifugal force
Impinging jet
LDA
Turbulence boundary layer

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1016/j.ijheatfluidflow.2004.05.013

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title = "Development of turbulent impinging jet on a rotating disk",

abstract = "We conduct detailed velocity measurements in the turbulent boundary layer, which is developed on a rotating disk opposed to a turbulent jet perpendicularly impinged onto it. The effect of rotation is remarkable in both the skew in the mean flow and in the centrifugal force. We propose a non-dimensional parameter that correlates these two effects and classifies the velocity field. We find the modification of the turbulence structure due to the disk rotation in the increase of the normal stress component in the circumferential direction. The increases in the other stress components are found to be indirect, i.e., re-distribution from the circumferential normal stress is the source of modification in the turbulence structure.",

keywords = "Centrifugal force, Impinging jet, LDA, Turbulence boundary layer",

author = "Y. Minagawa and S. Obi",

note = "Funding Information: The authors are grateful to Prof. S. Masuda for invaluable discussions. A part of the present study was financially supported by the Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Scientific Research (B), 15360100, 2003.",

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language = "English",

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T1 - Development of turbulent impinging jet on a rotating disk

AU - Minagawa, Y.

AU - Obi, S.

N1 - Funding Information: The authors are grateful to Prof. S. Masuda for invaluable discussions. A part of the present study was financially supported by the Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Scientific Research (B), 15360100, 2003.

PY - 2004/10

Y1 - 2004/10

N2 - We conduct detailed velocity measurements in the turbulent boundary layer, which is developed on a rotating disk opposed to a turbulent jet perpendicularly impinged onto it. The effect of rotation is remarkable in both the skew in the mean flow and in the centrifugal force. We propose a non-dimensional parameter that correlates these two effects and classifies the velocity field. We find the modification of the turbulence structure due to the disk rotation in the increase of the normal stress component in the circumferential direction. The increases in the other stress components are found to be indirect, i.e., re-distribution from the circumferential normal stress is the source of modification in the turbulence structure.

AB - We conduct detailed velocity measurements in the turbulent boundary layer, which is developed on a rotating disk opposed to a turbulent jet perpendicularly impinged onto it. The effect of rotation is remarkable in both the skew in the mean flow and in the centrifugal force. We propose a non-dimensional parameter that correlates these two effects and classifies the velocity field. We find the modification of the turbulence structure due to the disk rotation in the increase of the normal stress component in the circumferential direction. The increases in the other stress components are found to be indirect, i.e., re-distribution from the circumferential normal stress is the source of modification in the turbulence structure.

KW - Centrifugal force

KW - Impinging jet

KW - LDA

KW - Turbulence boundary layer

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JO - International Journal of Heat and Fluid Flow

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