Streamwise vortices generated by impinging flows in a confined duct

Jiun-Jih Miau, D. J. Sun, L. S. Yao

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Particle-tracer technique was employed for visualizing flow structures in a side-inlet square duct. The results obtained indicate that the streamwise vortices developed in the stagnation region of impinging flows are irregularly distributed. As the vortices convect downstream they are first stretched and merged, then squashed due to the non-zero pressure gradient effects caused by the flow separation regions existed along the side walls. The mechanism responsible for generating streamwise vortices in the stagnation region is suggested due to the hydrodynamic instability effect, similar to that previously found for three-dimensional disturbances growing in a two-dimensional stagnation flow.

Original languageEnglish
Pages (from-to)497-500
Number of pages4
JournalExperiments in Fluids
Volume7
Issue number7
DOIs
Publication statusPublished - 1989 Jul 1

Fingerprint

ducts
Ducts
Vortex flow
stagnation point
vortices
side inlets
stagnation flow
flow separation
Flow separation
Flow structure
Pressure gradient
pressure gradients
tracers
disturbances
Hydrodynamics
hydrodynamics

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

Cite this

Miau, Jiun-Jih ; Sun, D. J. ; Yao, L. S. / Streamwise vortices generated by impinging flows in a confined duct. In: Experiments in Fluids. 1989 ; Vol. 7, No. 7. pp. 497-500.
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Streamwise vortices generated by impinging flows in a confined duct. / Miau, Jiun-Jih; Sun, D. J.; Yao, L. S.

In: Experiments in Fluids, Vol. 7, No. 7, 01.07.1989, p. 497-500.

Research output: Contribution to journalArticle

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