Mathematical model of the hydrocyclone based on physics of fluid flow

Hsieh, K.T.; Rajamani, Raj K.

doi:10.1002/aic.690370511

Cited by 202 publications

(103 citation statements)

References 19 publications

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“…There are numerous numerical studies on the flow and the particle motion in hydrocyclones (Boysan et al, 1982;Brennan et al, 2007;Delgadillo and Rajamani, 2005;1996;He et al, 1999;Hsieh and Rajamani, 1988;Hsieh and Rajamani, 1991;Narasimha et al, 2006a;Narasimha et al, 2005;Nowakowski et al, 2004;Nowakowski et al, 2000;Suasnabar, 2000 andNarasimha 2010) and these studies have used a wide range of turbulence and multiphase models. It is well understood that in future studies, the focus should be to model the three-dimensional flow in a hydrocyclone with at least the Reynolds stress model/LES.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

A semi-mechanistic model of hydrocyclones — Developed from industrial data and inputs from CFD

Narasimha

Mainza

Holtham

et al. 2014

International Journal of Mineral Processing

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Please cite this article as: Narasimha, M., Mainza, A.N., Holtham, P.N., Powell, M.S., Brennan, M.S., A semi-mechanistic model of hydrocyclones -developed from industrial data and inputs from CFD, International Journal of Mineral Processing (2014), doi: 10.1016/j.minpro.2014 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T ABSTRACTThe flow behavior in hydrocyclones is extremely complex, leading the designers to rely on empirical equations for predicting cyclone performance. A number of classifying cyclone models have been developed and used in mineral comminution circuit simulators in the past. The problem with these empirical cyclone models is that they cannot be used outside the range of conditions under which they were developed. A semi-mechanistic hydrocyclone model is developed using the dimensionless approach based on both the fluid mechanics concepts from

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Section: Accepted M Manuscriptmentioning

confidence: 99%

A semi-mechanistic model of hydrocyclones — Developed from industrial data and inputs from CFD

Narasimha

Mainza

Holtham

et al. 2014

International Journal of Mineral Processing

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“…particle size, entry point, and feed concentration, has been numerically studied using a variety of turbulence models (see, e.g., Ref. [12][13][14][15]). For example, Hsieh and Rajamani [12] simulated 2-D trajectories of limestone particles in a water hydrocyclone using Lagrangain particle tracking in a pre-calculated flow field.…”

Section: Particle Tracking In Hydrocyclones Using Cfdmentioning

confidence: 99%

“…[12][13][14][15]). For example, Hsieh and Rajamani [12] simulated 2-D trajectories of limestone particles in a water hydrocyclone using Lagrangain particle tracking in a pre-calculated flow field. The CFD simulations of Cullivan et al [14], based on a secondorder-accurate pressure-strain Reynolds-stress turbulence model, showed particles being subjected to recirculatory paths in a hydrocyclone.…”

Section: Particle Tracking In Hydrocyclones Using Cfdmentioning

confidence: 99%

PEPT: An invaluable tool for 3-D particle tracking and CFD simulation verification in hydrocyclone studies

Chang

Adamsen

Pisarev

et al. 2013

EPJ Web of Conferences

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Abstract. Particle tracks in a hydrocyclone generated both experimentally by positron emission particle tracking (PEPT) and numerically with Eulerian-Lagranian CFD have been studied and compared. A hydrocyclone with a cylinder-on-cone design was used in this study, the geometries used in the CFD simulations and in the experiments being identical. It is shown that it is possible to track a fast-moving particle in a hydrocyclone using PEPT with high temporal and spatial resolutions. The numerical 3-D particle trajectories were generated using the Large Eddy Simulation (LES) turbulence model for the fluid and Lagrangian particle tracking for the particles. The behaviors of the particles were analyzed in detail and were found to be consistent between experiments and CFD simulations. The tracks of the particles are discussed and related to the fluid flow field visualized in the CFD simulations using the cross-sectional static pressure distribution.

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“…They compared the velocity distribution with experimental results gained by laser Doppler velocimetry (LDV). Solutions to the equation of turbulent flow motion and a comparison of the solutions with LDV measured flow pattern of a 75-mm hydrocyclone was successfully performed by Hsieh and Rajamani (1991). A series of works on the simulation of hydrocyclones using the incompressible Navier-Stokes equations, complemented by an adequate turbulence model, have proven to be suitable for modeling the flow in hydrocyclones (Cullivan et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of hydroabrasion in a hydrocyclone

Azimian

Bart

2016

Pet. Sci.

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The velocity profiles and separation efficiency curves of a hydrocyclone were predicted by an Euler-Euler approach using a computational fluid dynamics tool ANSYS-CFX 14.5. The Euler-Euler approach is capable of considering the particle-particle interactions and is appropriate for highly laden liquid-solid mixtures. Predicted results were compared and validated with experimental results and showed a considerably good agreement. An increase in the particle cut size with increasing solid concentration of the inlet mixture flow was observed and discussed. In addition to this, the erosion on hydrocyclone walls constructed from stainless steel 410, eroded by sand particles (mainly SiO 2 ), was predicted with the Euler-Lagrange approach. In this approach, the abrasive solid particles were traced in a Lagrangian reference frame as discrete particles. The increases in the input flow velocity, solid concentration, and the particle size have increased the erosion at the upper part of the cylindrical body of the hydrocyclone, where the tangential inlet flow enters the hydrocyclone. The erosion density in the area between the cylindrical to conical body area, in comparison to other parts of the hydrocyclone, also increased considerably. Moreover, it was observed that an increase in the particle shape factor from 0.1 to 1.0 leads to a decrease of almost 70 % in the average erosion density of the hydrocyclone wall surfaces.

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Mathematical model of the hydrocyclone based on physics of fluid flow

Cited by 202 publications

References 19 publications

A semi-mechanistic model of hydrocyclones — Developed from industrial data and inputs from CFD

A semi-mechanistic model of hydrocyclones — Developed from industrial data and inputs from CFD

PEPT: An invaluable tool for 3-D particle tracking and CFD simulation verification in hydrocyclone studies

Numerical analysis of hydroabrasion in a hydrocyclone

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