Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
621796 | Chemical Engineering Research and Design | 2012 | 7 Pages |
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 15Â mm with constant frequency of 1Â Hz are applied. Vortex and cycle average velocities at different points are analyzed. The studies show the maximum velocity for 5Â mm, 10Â mm and 15Â mm in an OBC are 0.11Â m/s, 0.25Â m/s and 0.40Â 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 5Â mm to 10Â mm and 2 times when the amplitude is triple from 5Â mm. The detailed validation is presented somewhere else; this research is focused on the effect of oscillation.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Ahmad Azahari Hamzah, Nurul Hasan, Mohd Sobri Takriff, Siti Kartom Kamarudin, Jaafar Abdullah, Isa M. Tan, Wah Keng Sern,