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Direct Forcing for Lagrangian Rigid-Fluid Coupling

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3 Author(s)
Becker, M. ; Comput. Sci. Dept., Albert-Ludwigs-Univ. Freiburg, Freiburg im Breisgau ; Tessendorf, H. ; Teschner, M.

We propose a novel boundary handling algorithm for particle-based fluids. Based on a predictor-corrector scheme for both velocity and position, one- and two-way coupling with rigid bodies can be realized. The proposed algorithm offers significant improvements over existing penalty-based approaches. Different slip conditions can be realized and non-penetration is enforced. Direct forcing is employed to meet the desired boundary conditions and to ensure valid states after each simulation step. We have performed various experiments in 2D and 3D. They illustrate one- and two-way coupling of rigid bodies and fluids, the effects of hydrostatic and dynamic forces on a rigid body as well as different slip conditions. Numerical experiments and performance measurements are provided.

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Visualization and Computer Graphics, IEEE Transactions on  (Volume:15 ,  Issue: 3 )