Effect of oscillation amplitude on velocity distributions in an oscillatory baffled column (OBC)

Ahmad Azahari Hamzah, Nurul Hasan, Mohd Sobri Takriff, Siti Kartom Kamarudin, Jaafar Abdullah, Isa M. Tan, Wah Keng Sern

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This paper presents a numerical study of the effect of oscillation amplitude in oscillatory baffled column (OBC) using computational fluid dynamics. The numerical work was carried out for single phase liquid flow for an unsteady 3-D model using commercial software, Fluent (2006). This work was concentrated on the effect of oscillation amplitude. Three amplitudes of 5, 10 and 15. mm with constant frequency of 1. Hz are applied. Vortex and cycle average velocities at different points are analyzed. The studies show the maximum velocity for 5. mm, 10. mm and 15. mm in an OBC are 0.11. m/s, 0.25. m/s and 0.40. m/s respectively in the first cycle of oscillation. At a constant frequency, greater oscillation amplitude displaces the liquid to a further distance and builds a larger vortex. Vortex length was 1.5 times bigger when oscillation amplitude changes from 5. mm to 10. mm and 2 times when the amplitude is triple from 5. mm. The detailed validation is presented somewhere else; this research is focused on the effect of oscillation.

Original languageEnglish
Pages (from-to)1038-1044
Number of pages7
JournalChemical Engineering Research and Design
Volume90
Issue number8
DOIs
Publication statusPublished - Aug 2012

Fingerprint

Velocity distribution
Vortex flow
Liquids
Computational fluid dynamics

Keywords

  • CFD
  • Flow pattern
  • Oscillation amplitude
  • Oscillatory baffled column
  • Velocity distributions
  • Vortex length

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Effect of oscillation amplitude on velocity distributions in an oscillatory baffled column (OBC). / Hamzah, Ahmad Azahari; Hasan, Nurul; Takriff, Mohd Sobri; Kamarudin, Siti Kartom; Abdullah, Jaafar; Tan, Isa M.; Sern, Wah Keng.

In: Chemical Engineering Research and Design, Vol. 90, No. 8, 08.2012, p. 1038-1044.

Research output: Contribution to journalArticle

Hamzah, Ahmad Azahari ; Hasan, Nurul ; Takriff, Mohd Sobri ; Kamarudin, Siti Kartom ; Abdullah, Jaafar ; Tan, Isa M. ; Sern, Wah Keng. / Effect of oscillation amplitude on velocity distributions in an oscillatory baffled column (OBC). In: Chemical Engineering Research and Design. 2012 ; Vol. 90, No. 8. pp. 1038-1044.
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