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Browsing by Author "Heyns, Johan A"

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A computationally efficient 3D finite-volume scheme for violent liquid–gas sloshing

Author: Oxtoby, Oliver F ; Malan, AG ; Heyns, Johan A Date: Oct 2015 We describe a semi-implicit volume-of-fluid free-surface-modelling methodology for flow problems involving violent free-surface motion. For efficient computation, a hybrid-unstructured edge-based vertex-centred finite volume discretisation ... Read more
Development of a compressive surface capturing formulation for modelling free-surface flow by using the volume-of-fluid approach

Author: Heyns, Johan A ; Malan, AG ; Harms, TM ; Oxtoby, Oliver F Date: Jun 2012 With the aim of accurately modelling free-surface flow of two immiscible fluids, this study presents the development of a new volume-of-fluid free-surface capturing formulation. By building on existing volume-of-fluid approaches, the new ... Read more
Feasibility of rotor fault detection from a fluid dynamics perspective

Author: Robbins, SL ; Heyns, PS ; Heyns, Johan A Date: May 2020 The majority of condition monitoring techniques employed today consider the acquisitioning and analysis of structural responses as a means of profiling machine condition and performing fault detection. Modern research and newer technologies ... Read more
Free-surface modelling technology for compressible and violent flows

Author: Heyns, Johan A ; Harms, TM ; Malan, AG Date: Jun 2011 This study presents the development of novel modelling technology for compressible and violent free-surface flows, where the new technology aims to extend the capabilities of existing FSM formulations. For the purpose of this study the ... Read more
Modelling dynamic liquid-gas systems: Extensions to the volume-of-fluid solver

Author: Heyns, Johan A ; Oxtoby, Oliver F ; Suliman, Ridhwaan Date: Jun 2013 This study presents the extension of the volume-of-fluid solver, interFoam, for improved accuracy and efficiency when modelling dynamic liquid-gas systems. Examples of these include the transportation of liquids, such as in the case of fuel ... Read more
A weakly compressible formulation for modelling liquid-gas sloshing

Author: Heyns, Johan A ; Oxtoby, Oliver F ; Malan, AG Date: Sep 2012 This study presents the development and extension of free-surface modelling techniques with the purpose of improving the modelling accuracy for liquid-gas sloshing. Considering high density ratio fluids under low Mach number conditions, the ... Read more
A weakly compressible free-surface flow solver for liquid–gas systems using the volume-of-fluid approach

Author: Heyns, Johan A ; Malan, AG ; Harms, TM ; Oxtoby, Oliver F Date: May 2013 This paper presents a weakly compressible volume-of-fluid formulation for modelling immiscible high density ratio two-fluid flow under low Mach number conditions. This follows findings of experimental analyses that concluded the compressibility ... Read more

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Browsing by Author "Heyns, Johan A"

Browsing by Author "Heyns, Johan A"

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All of ResearchSpace

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