Free surface flow simulations on GPGPUs using the LBM

Christian Janssen, Manfred Krafczy
Institute for Computational Modeling in Civil Engineering, Technische Universitat Braunschweig, Braunschweig, Germany
Computers & Mathematics with Applications, Volume 61, Issue 12, Pages 3549-3563, 2011


   title={Free surface flow simulations on GPGPUs using the LBM},

   author={Jansen, C. and Krafczyk, M.},

   journal={Computers & Mathematics with Applications},





   publisher={Elsevier Science, The Boulevard Kidlington Oxford OX 5 1 GB UK}


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In this paper, we present the implementation of a volume-of-fluid-(VOF)-based algorithm for the simulation of free-surface flow problems on general purpose graphical processing units (GPGPUs). For the solution of the flow field and the additional advection equation for the VOF fill level, the lattice Boltzmann method on the basis of an MRT collision operator is used. A Smagorinsky LES model serves to capture the small-scale turbulent structures of the flow. We show that despite the additional non-local operations near the phase interface, we end up with an algorithm with good overall performance, which is suitable for the simulation of demanding real-world engineering applications.
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