Numerical investigation of the flow pulsation in the gap connecting with two parallel rectangular channels with different cross-section areas

Jeong Sik Seo, Jong Kuen Shin, Young Don Choi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Flow pulsation in the gap connecting with two parallel channels is investigated by RANS and URANS approaches. The two parallel channels are connected by a small channel called for a gap. The parallel channels are designed to have different cross section area with its ratio of 0.5. Computations are conducted using a CFX 11.0 code. The bulk Reynolds number is 60,000. Predicted results are compared with the previous experimental data. Mean velocity profile at the center of gap region are compared with experiments for its validation. Spectral analysis on the lateral velocity in the center of the gap was performed. Auto correlation for the axial-flow velocity pattern was presented. The unsteady structure of the flow pulsation was visualized in the region of the gap in the parallel channel.

Original languageEnglish
Pages (from-to)512-519
Number of pages8
JournalTransactions of the Korean Society of Mechanical Engineers, B
Volume33
Issue number7
DOIs
Publication statusPublished - 2009 Aug 7

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Axial flow
Autocorrelation
Flow velocity
Spectrum analysis
Reynolds number
Experiments

Keywords

  • Flow pulsation
  • Gap
  • Spectral analysis
  • Turbulent mixing

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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abstract = "Flow pulsation in the gap connecting with two parallel channels is investigated by RANS and URANS approaches. The two parallel channels are connected by a small channel called for a gap. The parallel channels are designed to have different cross section area with its ratio of 0.5. Computations are conducted using a CFX 11.0 code. The bulk Reynolds number is 60,000. Predicted results are compared with the previous experimental data. Mean velocity profile at the center of gap region are compared with experiments for its validation. Spectral analysis on the lateral velocity in the center of the gap was performed. Auto correlation for the axial-flow velocity pattern was presented. The unsteady structure of the flow pulsation was visualized in the region of the gap in the parallel channel.",
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