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Browsing by Author "Malan, Arnaud G"

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A ball-vertex approach to r-refinement for accuracy enhancements in CFD Calculations

Author: Jones, Bevan W S ; Malan, Arnaud G ; van Rooyen, Jacobus A Date: 2015 Presented in this paper is an accuracy enhancing r-refinement scheme based on the ballvertex method [1, 2]. Due the success of the method in mesh movement, this work seeks to extend its use to error minimization for computational fluid dynamics ... Read more
Computational fluid dynamic based optimisation of an industrial axial fan for rapid prototyping

Author: Van Rooyen, Jacobus A Date: 2017 Axial air flow fans are widely used for air movement. In an increasingly international and competitive market, smaller fan companies find themselves in need of rapid preliminary design. This need is addressed in this study through the development ... Read more
Direct numerical simulation of free-surface and interfacial flow using the VOF method: cavitating bubble clouds and phase change

Author: Malan, Leon Date: 2018 Direct Numerical Simulation of two-phase ow is used extensively for engineering research and fundamental fluid physics studies. This study is based on the Volume-Of-Fluid (VOF) method, originally created by Hirt and Nicols. This method has ... Read more
Effect of Pulsatility on the Transport of Thrombin in an Idealized Cerebral Aneurysm Geometry

Author: Hume, Struan ; Tshimanga, Jean-Marc Ilunga ; Geoghegan, Patrick ; Malan, Arnaud G ; Ho, Wei Hua ; Ngoepe, Malebogo N Date: 11 Jan 2022 Computational models of cerebral aneurysm thrombosis are designed for use in research and clinical applications. A steady flow assumption is applied in many of these models. To explore the accuracy of this assumption a pulsatile-flow ... Read more c b
A finite volume discretization method for flow on structured and unstructured anisotropic meshes

Author: Merrick, Dane Glen Date: 2015 This project is concerned with advection discretization technology within the field of Computational Fluid Dynamics (CFD). To this end, two novel methods are proposed which are dubbed the Enhanced Taylor (ET) Schemes. The model equation for ... Read more
First Order Assessment of Heat Transfer due to the Loss of Inventory in a Spent Fuel Pool

Author: Fillis, Vernon W Date: 2018 The Fukushima Daiichi Nuclear Power Plant accident created renewed international interest in the behaviour of spent fuel subsequent to a complete loss of water inventory in a spent fuel pool (SFP). The study conducted in this dissertation ... Read more
Mesh adaptation through r-refinement using a truss network analogy

Author: Jones, Bevan W S Date: 2015 This project investigates the use of a truss network, a structural mechanics model, as a metaphor for adapting a computational fluid dynamics (CFD) mesh. The objective of such adaptation is to increase computational effi- ciency by reducing ... Read more
Numerical investigation of the convective heat transfer coefficient of the human body using a representative cylindrical model

Author: Eferemo, Daniel Date: 2017 The principal objective of this study is to investigate, develop and verify a framework for determining the convective heat transfer co-efficient from a cylindrical model that can easily be adaptable to more complex geometry - more specifically ... Read more
Stable and high order accurate finite difference method for the incompressible laminar boundary layer equations

Author: Nchupang, Mojalefa Prince Date: 2020 Numerical simulations of incompressible flows are unequivocally important due to their numerous industrial applications. These applications ranges from the large-scale fluid's flow modelling such as aerodynamics [1], atmospheric-ocean modelling ... Read more
Toward a full aircraft model platform for fuel slosh-structure interaction simulations

Author: Farao, Javon Date: 2015 The purpose of this study was to initiate the development of a full aircraft model (FAM) for the purpose of non-linear loads calculation of an aircraft. The FAM is employed during the design process of an aircraft and comprises of various ... Read more
Towards a hybrid CFD platform for investigating aircraft trailing vortices

Author: Changfoot, Donovan M Date: 2017 This dissertation outlines the development of a parallel 3D hybrid finite-volume- finite-difference solver. As motivation for such a scheme, the specific application area under consideration is modeling the trailing vortices shed from the ... Read more