Turbulence Model Analysis of Flow inside a Hydrocyclone
نویسنده
چکیده
Turbulence analysis of flow inside a hydrocyclone is carried out using commercially available CFD software ANSYS-CFX (release 11.0). Commercial CFD software(s) and their turbulence models have come a long way in accurately predicting the flow inside a hydrocyclone, both at the mean as well as at the turbulence level. Previous studies have shown, the more accurate the turbulence prediction is, the more expensive the simulations are in terms of time. In this paper we have shown, among various turbulence models tested, a twoequation SST (Shear Stress Transport) turbulence model coupled with curvature correction can accurately predict the mean flow behaviour. The same level of accuracy was only found with a SSG Reynolds stress model with a penalty of solving an additional five transport equations. A detailed mesh independency study was carried out to verify the same, in order to minimise any errors from mesh resolution. Experimental data of Monredon et al., (1992) was used to validate our CFD models. SST with curvature correction and SSG turbulence models showed good comparison to both axial as well as tangential velocities along the various sections of the geometry.
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تاریخ انتشار 2009