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

Young Don Choi, Dong Chul Kim, Kun Hee Lee

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)1503-1516
Number of pages14
JournalJournal of Mechanical Science and Technology
Volume19
Issue number7
DOIs
Publication statusPublished - 2005 Jul 1

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Turbulent flow
Turbulence
Wire
Coriolis force
Anemometers
Electric potential

Keywords

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

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Measurement of developing turbulent flows in a 90-degree square bend with spanwise rotation. / Choi, Young Don; Kim, Dong Chul; Lee, Kun Hee.

In: Journal of Mechanical Science and Technology, Vol. 19, No. 7, 01.07.2005, p. 1503-1516.

Research output: Contribution to journalArticle

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