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

In English

Författare

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.

Avdelning/ar

Publiceringsår

2004

Språk

Engelska

Sidor

639-653

Publikation/Tidskrift/Serie

Experimental Thermal and Fluid Science

Volym

28

Issue

6

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Energy Engineering

Nyckelord

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

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1879-2286