Search Results - "Holtham, P.N."

CFD modeling of hydrocyclones: Prediction of particle size segregation by Narasimha, M., Brennan, M.S., Holtham, P.N.

“…[Display omitted] . ► We model hydrocyclones using multiphase CFD to simulate the particle size segregation. ► The CFD data compared with sampling probe data…”
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Large eddy simulation of hydrocyclone—prediction of air-core diameter and shape by Narasimha, M., Brennan, Mathew, Holtham, P.N.

“…Hydrocyclones are widely used in the mining and chemical industries. An attempt has been made in this study, to develop a CFD (computational fluid dynamics)…”
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A semi-mechanistic model of hydrocyclones — Developed from industrial data and inputs from CFD by Narasimha, M., Mainza, A.N., Holtham, P.N., Powell, M.S., Brennan, M.S.

“…The flow behavior in hydrocyclones is extremely complex, leading the designers to rely on empirical equations for predicting cyclone performance. A number of…”
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The particle detachment process in flotation by Cheng, Ta-Wui, Holtham, P.N.

“…Experimental measurements of particle-bubble detachment forces by means of a novel vibration technique provide a more realistic analogue of the conditions in a…”
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Multiphase modelling of hydrocyclones – prediction of cut-size by Brennan, M.S., Narasimha, M., Holtham, P.N.

“…A comprehensive multiphase model of cyclone separators using Computational Fluid Dynamics is under development. The model is capable of predicting velocity…”
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Evaluation of the potential for using dielectrophoresis to separate minerals by Ballantyne, G.R., Holtham, P.N.

“…•The application of dielectrophoresis to mineral processing is explored.•The dielectrophoretic force was measured on quartz and chalcopyrite…”
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A comprehensive CFD model of dense medium cyclone performance by Narasimha, M., Brennan, M.S., Holtham, P.N., Napier-Munn, T.J.

“…A computational fluid dynamics (CFD) model of the dense medium cyclone (DMC) has been developed, using Fluent, by coupling component models for the air-core,…”
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Application of dielectrophoresis for the separation of minerals by Ballantyne, G.R., Holtham, P.N.

“…Comminution is an energy intensive process, accounting for approximately 29% of total mining energy ( Tromans, 2008). Better liberation at coarser size ranges…”
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Numerical simulation of magnetite segregation in a dense medium cyclone by Narasimha, M., Brennan, M.S., Holtham, P.N.

“…Numerical simulations of turbulent driven flow in a dense medium cyclone with magnetite medium have been conducted using Fluent. The predicted air core shape…”
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Air-core modelling for hydrocyclones operating with solids by Narasimha, M., Mainza, A.N., Holtham, P.N., Brennan, M.S.

“…The air core is one of the most important internal structures in the flow field of hydrocyclones. One difficulty in predicting the flow split in cyclones is…”
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Study of flow behaviour in a three-product cyclone using computational fluid dynamics by Mainza, A., Narasimha, M., Powell, M.S., Holtham, P.N., Brennan, M.

“…Simplicity in design and minimal floor space requirements render the hydrocyclone the preferred classifier in mineral processing plants. Empirical models have…”
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Prediction of magnetite segregation in dense medium cyclone using computational fluid dynamics technique by Narasimha, M., Brennan, Mathew, Holtham, P.N.

“…Multi-phase simulations of turbulent driven flow in a dense medium cyclone with magnetite medium have been conducted in Fluent, using the Algebraic Slip…”
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On-line analysis of froth surface in coal and mineral flotation using JKFrothCam by Holtham, P.N, Nguyen, K.K

“…The personal computer revolution has resulted in the widespread availability of low-cost image analysis hardware. At the same time, new graphic file formats…”
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Magnetic susceptibility measurement applied to the minerals industry by Cavanough, G.L., Holtham, P.N., Powell, T.M.

“…The efficiency of numerous mineral processing operations can be determined by measuring the magnetic properties of the process streams. This measurement, if…”
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Modeling of flowing film concentrators by Majumder, A.K., Lyman, G.J., Brennan, M., Holtham, P.N.

“…A large number of mineral processing equipment employs the basic principles of gravity concentration in a flowing fluid of a few millimetres thick in small…”
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Particle bed charge decay behaviour under high tension roll separation by Ziemski, M., Holtham, P.N

“…A new theory of particle discharge in high tension roll (HTR) separation is presented. The discharge dynamics of an isolated charged particle resting on a…”
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