Scattering by stochastic boundaries: hybrid low- and high-order quantification algorithms

S. C. Hawkins, M. Ganesh

    Research output: Contribution to journalConference paperpeer-review

    Abstract

    We present an efficient framework for simulating the average wave scattering properties of two dimensional randomly shaped particles with statistical properties similar to model aerosols particles that are important in atmospheric science applications. Our framework is based on an efficient high order discretisation of the spatial dimensions and parallel implementations for the large number of stochastic dimensions. We demonstrate our framework by simulating the mean (and higher order moments) of the far field of the model particles. We use tens of thousands of Monte Carlo, quasi-Monte Carlo and sparse grid generalised polynomial chaos realisations of the random particle model.
    Original languageEnglish
    Pages (from-to)C312-C338
    Number of pages27
    JournalANZIAM Journal
    Volume56
    DOIs
    Publication statusPublished - 2016
    EventComputational Techniques and Applications Conference (17th : 2014) - Canberra, Australia
    Duration: 1 Dec 20143 Dec 2014

    Keywords

    • uncertainty quantification
    • acoustic scattering
    • Helmholtz equation
    • stochastic particle

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