Measurement of developing turbulent flows in a 90-degree square bend with spanwise rotation

Young Don Choi; Dong Chul Kim; Kun Hee Lee

doi:10.1007/BF03023909

Measurement of developing turbulent flows in a 90-degree square bend with spanwise rotation

Young Don Choi, Dong Chul Kim, Kun Hee Lee

* Honorary professors

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

1 Citation (Scopus)

Abstract

Mean flow and turbulence properties of developing turbulent flows in a 90 degree square bend with span-wise rotation are measured by a hot-wire anemometer. A slanted wire is rotated into 6 orientations and the voltage outputs from them are combined to obtain the mean velocity and the Reynolds stress components. Combined effects of the centrifugal and Coriolis forces due to the curvature and the rotation of the bend on the mean motion and turbulence structures are investigated experimentally. Results show that the two body forces can either enhance or counteract each other depending on the flow direction in the bend.

Original language	English
Pages (from-to)	1503-1516
Number of pages	14
Journal	Journal of Mechanical Science and Technology
Volume	19
Issue number	7
DOIs	https://doi.org/10.1007/BF03023909
Publication status	Published - 2005 Jul

Keywords

Coriolis Force
Hot-wire measurement
Reynolds Stress
Rotating Curved Duct
Turbulent Flow

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering

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10.1007/BF03023909

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title = "Measurement of developing turbulent flows in a 90-degree square bend with spanwise rotation",

abstract = "Mean flow and turbulence properties of developing turbulent flows in a 90 degree square bend with span-wise rotation are measured by a hot-wire anemometer. A slanted wire is rotated into 6 orientations and the voltage outputs from them are combined to obtain the mean velocity and the Reynolds stress components. Combined effects of the centrifugal and Coriolis forces due to the curvature and the rotation of the bend on the mean motion and turbulence structures are investigated experimentally. Results show that the two body forces can either enhance or counteract each other depending on the flow direction in the bend.",

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AU - Kim, Dong Chul

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N2 - Mean flow and turbulence properties of developing turbulent flows in a 90 degree square bend with span-wise rotation are measured by a hot-wire anemometer. A slanted wire is rotated into 6 orientations and the voltage outputs from them are combined to obtain the mean velocity and the Reynolds stress components. Combined effects of the centrifugal and Coriolis forces due to the curvature and the rotation of the bend on the mean motion and turbulence structures are investigated experimentally. Results show that the two body forces can either enhance or counteract each other depending on the flow direction in the bend.

AB - Mean flow and turbulence properties of developing turbulent flows in a 90 degree square bend with span-wise rotation are measured by a hot-wire anemometer. A slanted wire is rotated into 6 orientations and the voltage outputs from them are combined to obtain the mean velocity and the Reynolds stress components. Combined effects of the centrifugal and Coriolis forces due to the curvature and the rotation of the bend on the mean motion and turbulence structures are investigated experimentally. Results show that the two body forces can either enhance or counteract each other depending on the flow direction in the bend.

KW - Coriolis Force

KW - Hot-wire measurement

KW - Reynolds Stress

KW - Rotating Curved Duct

KW - Turbulent Flow

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Measurement of developing turbulent flows in a 90-degree square bend with spanwise rotation

Abstract

Keywords

ASJC Scopus subject areas

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