Searched for: author%3A%22Maljaars%2C+J.M.%22
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Sime, Nathan (author), Maljaars, J.M. (author), Wilson, Cian R. (author), van Keken, Peter E. (author)
Tracer methods are widespread in computational geodynamics for modeling the advection of chemical data. However, they present certain numerical challenges, especially when used over long periods of simulation time. We address two of these in this work: the necessity for mass conservation of chemical composition fields and the need for the...
journal article 2021
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Maljaars, J.M. (author), Richardson, Chris N. (author), Sime, Nathan (author)
This paper introduces LEOPART, an add-on for the open-source finite element software library FENICS to seamlessly integrate Lagrangian particle functionality with (Eulerian) mesh-based finite element (FE) approaches. LEOPART- which is so much as to say: ‘Lagrangian–Eulerian on Particles’ - contains tools for efficient, accurate and scalable...
journal article 2021
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Maljaars, J.M. (author), Labeur, R.J. (author), Trask, Nathaniel A. (author), Sulsky, Deborah L. (author)
A particle-mesh strategy is presented for scalar transport problems which provides diffusion-free advection, conserves mass locally (i.e. cellwise) and exhibits optimal convergence on arbitrary polyhedral meshes. This is achieved by expressing the convective field naturally located on the Lagrangian particles as a mesh quantity by formulating a...
conference paper 2020
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Maljaars, J.M. (author)
This thesis presents a numerical framework for simulating advection-dominated flows which reconciles the advantages of Eulerian mesh-based schemes with those of a Lagrangian particle-based discretization strategy. Particularly, the strategy proposed in this thesis inherits the diffusion-free properties as in Lagrangian particle-based advection,...
doctoral thesis 2019
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Maljaars, J.M. (author), Labeur, R.J. (author), Trask, Nathaniel (author), Sulsky, Deborah (author)
By combining concepts from particle-in-cell (PIC) and hybridized discontinuous Galerkin (HDG) methods, we present a particle–mesh scheme for flow and transport problems which allows for diffusion-free advection while satisfying mass and momentum conservation – locally and globally – and extending to high-order spatial accuracy. This is achieved...
journal article 2019
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Maljaars, J.M. (author), Labeur, R.J. (author), Möller, M. (author)
A generic particle–mesh method using a hybridized discontinuous Galerkin (HDG) framework is presented and validated for the solution of the incompressible Navier–Stokes equations. Building upon particle-in-cell concepts, the method is formulated in terms of an operator splitting technique in which Lagrangian particles are used to discretize...
journal article 2018
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Maljaars, J.M. (author), Labeur, R.J. (author), Möller, M. (author), Uijttewaal, W.S.J. (author)
In this work the feasibility of a numerical wave tank using a hybrid particle-mesh method is investigated. Based on the Fluid Implicit Particle Method (FLIP) a generic formulation for the hybrid method is presented for incompressible multi-phase flows involving large density jumps and wave generating boundaries. The performance of the method...
journal article 2017
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Maljaars, J.M. (author)
Hybrid particle-mesh methods attempt to combine the advantages of Eulerian and Lagrangian methods: Lagrangian particles are used for the advection, whereas a Eulerian background grid is used for computing the particle interactions. Such a hybrid approach is expected to have several benefits when simulating flows involving free surfaces or...
master thesis 2016
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