Effect of inner wall configurations on the separation efficiency of hydrocyclone
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The cyclone separator is widely used for separating liquid-gas as well as particle-laden flow through the vortex separation phenomenon. This is a simple principle with wide temperature and pressure range, so it can be used in various industrial fields. So far, many studies have dealt with the case where there is no groove on the inner wall of the hydrocyclone. In this study, the flow characteristics and the particle separation efficiency of the cyclone separator were investigated by changing the inner wall configuration through numerical analysis. The geometry was designed by changing the wall configuration after referring to previous research. The change of wall was ribbing (convex) and slotting (concave) with a helical pattern. The helical parameters were changed, and their results were compared with each other. The working fluid is water, and the solid is an asphalt that was assumed to be spherical. Numerical analysis was performed using ANSYS CFX ver. 18.1. The Reynolds stress turbulence model (RSM) was used, which is suitable for the simulation of swirling turbulent and vorticial flows. The results of this study suggest that the optimal shape of wall surface will improve the fine particle separation technique of the cyclone separator.
KeywordsCFD Hydrocyclone Helical pattern Fine particle
Diameter of hydrocyclone body
Diameter of helical pattern circle
x direction velocity
Viscosity of carrying fluid
Drag force acting on particle
Buoyancy force acting on particle
Rotation force acting on particle
Density of particle
Effective surface area of particle
Drag coefficient uses the Schiller and Naumann
Reynolds number of particle
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This research was supported by a grant (19IFIP-B089065-06) from the Plant R&D Program funded by the Ministry of Land, Infrastructure and Transport of the Korean Government.
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