Effect of porosity on circle grid perforated plate performance as a static mixer in laminar flow
Mixing is one of the important processes to the many industries. Fluid mixing process typically involves three phases of fluid in the form of liquids, gases and solids. To obtain a desired type of mixing, one of the devices that can be use is a static mixer. In this study, a perforated plate static...
| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Published: |
2015
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/6864/ http://eprints.uthm.edu.my/6864/1/Effect_of_porosity_on_circle_grid_perforated_plate_performance_as_a_static_mixer_in_laminar_flow.pdf |
| Summary: | Mixing is one of the important processes to the many industries. Fluid mixing process
typically involves three phases of fluid in the form of liquids, gases and solids. To obtain a desired
type of mixing, one of the devices that can be use is a static mixer. In this study, a perforated plate
static mixer with circle grid fractal design with two grades of porosity which are 50% and 75% will
introduce. The purpose of implementing the hvo grades porosity of perforated plate in this study is
to determine a performance of the two static mixers. In order to achieve the objective, the
simulations of mixing fluid were carried out by using ANSYS CFX software. The simulation was
carrying out primarily cylindrical pipe with insertions of circle grid perforated plate. Three levels
of laminar flow had been used which is Reynolds numbers (Re) equal to 100, 200 and 400. The
performance of circle grid perforated plate static mixer will be evaluated by determining the
Coefiic~enot f Variat~on( COV). The simulat~onre sults also were compared m term of homogeneity
level of mixing fluids to the Kenics static mixer. Based on the simulation results, the value of COV
at selected plane in pipeline simulated for Kenics static mixer and the two grades porosity of
perforated plate at Re = 400 are 0.000703, 0.0247and 0.00427 respectively. Since the values of
COV between 0.01 and 0.05 are a reasonable target for many industry applications, the results for
new approach of static mixer represent completely homogeneous mixing fluid for this application.
Definitely this new approach of circle grid perforated plate with fiactal design gave better results
because of lower number of inserts and simple design of static mixer |
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