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PIV measurement of the flow field in rectangular ducts with 60 circle parallel, crossed and V-shaped ribs

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Author

Summary, in English

The flow characteristics in rectangular ducts with aspect ratio of 1:8 were investigated experimentally using particle image velocimetry to reveal the function of the inclined ribs as turbulators or generators of favorable flows. Circular ribs were attached on the wide walls and the rib height-to-hydraulic diameter ratio was kept as 0.06 with an attack angle of 60degrees. The obtained results showed strong effects of the inclined ribs on the flow behavior by the development of secondary flows. The magnitude of the streamwise velocity component was detected to have spanwise variation. The flow characteristics were correlated with the previous corresponding heat transfer results obtained by the same authors. (C) 2003 Elsevier Inc. All rights reserved.

Department/s

Publishing year

2004

Language

English

Pages

639-653

Publication/Series

Experimental Thermal and Fluid Science

Volume

28

Issue

6

Document type

Journal article

Publisher

Elsevier

Topic

  • Energy Engineering

Keywords

  • secondary flow
  • enhancement
  • heat transfer
  • rib-roughened duct
  • particle image velocimetry

Status

Published

ISBN/ISSN/Other

  • ISSN: 1879-2286