A dynamic particle coalescing and splitting scheme for SPH

Benedict D. Rogers, T Rung (Editor), C Ulrich (Editor)

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    In this paper a dynamic refinement algorithm forSmoothed Particle Hydrodynamics (SPH) is presented. Thevariable resolution in SPH is achieved using both the particlesplitting and a novel conservative particle coalescing procedure.The particle splitting procedure is able to increase the resolutionby increasing the number of particles in the domain, andconversely, the resolution is reduced by coalescing particles (toimprove the efficiency). This is accomplished while conservingboth mass and momentum, and calculating the smoothing lengthof the new particles by minimizing the density error. The generalapplicability of the new dynamic particle refinement procedureis assessed by applying it to shallow water equations (SWEs) andtesting the numerical scheme against different reference solutions.In the real-life test case the particle coalescing procedure leadsto a reduction of the computational time by a factor of 15.
    Original languageEnglish
    Title of host publicationProc. 6th International SPHERIC Workshop
    EditorsT Rung, C Ulrich
    Pages93-100
    Number of pages8
    Publication statusPublished - 2011
    Event6th International SPHERIC Workshop - TUHH Hamburg
    Duration: 8 Jun 201110 Jun 2011

    Conference

    Conference6th International SPHERIC Workshop
    CityTUHH Hamburg
    Period8/06/1110/06/11

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