Author Archives: christopherbatty

Pressure Boundaries for Implicit Incompressible SPH

Stefan Band, Christoph Gissler, Markus Ihmsen, Jens Cornelis, Andreas Peer, Matthias Teschner Implicit incompressible SPH (IISPH) solves a pressure Poisson equation (PPE). While the solution of the PPE provides pressure at fluid samples, the embedded boundary handling does not compute … Continue reading

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An Implicit SPH Formulation for Incompressible Linearly Elastic Solids

Andreas Peer, Christoph Gissler, Stefan Band, Matthias Teschner We propose a novel SPH formulation for deformable solids. Key aspects of our method are implicit elastic forces and an adapted SPH formulation for the deformation gradient that—in contrast to previous work—allows … Continue reading

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SIGGRAPH 2018

SIGGRAPH: Water Surface Wavelets tempoGAN: A Temporally Coherent, Volumetric GAN for Super-resolution Fluid Flow Animating Fluid Sediment Mixture in Particle-Laden Flows A Moving Least Squares Material Point Method with Displacement Discontinuity and Two-Way Rigid Body Coupling A Multi-Scale Model for … Continue reading

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Controllable Dendritic Crystal Simulation Using Orientation Field

Bo Ren, Jiahui Huang, Ming C. Lin, Shi-Min Hu Real world dendritic growths show charming structures by their exquisite balance between the symmetry and randomness in the crystal formation. Other than the variety in the natural crystals, richer visual appearance … Continue reading

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A Skinned Tetrahedral Mesh for Hair Animation and Hair-Water Interaction

Minjae Lee, David Hyde, Michael Bao, Ronald Fedkiw We propose a novel framework for hair animation as well as hair-water interaction that supports millions of hairs. First, we develop a hair animation framework that embeds hair into a tetrahedralized volume … Continue reading

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Exponential Rosenbrock-Euler Integrators for Elastodynamic Simulation

Yu Ju Chen, Uri M. Ascher, Dinesh K. Pai High quality simulations of the dynamics of soft flexible objects can be rather costly, because the assembly of internal forces through an often nonlinear stiffness at each time step is expensive. … Continue reading

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Efficient BVH-based Collision Detection Scheme with Ordering and Restructuring

X. L. Wang, M. Tang, D. Manocha, Ruo-Feng Tong Bounding volume hierarchy (BVH) has been widely adopted as the acceleration structure in broad-phase collision detection. Previous state-of-the-art BVH-based collision detection approaches exploited the spatio-temporal coherence of simulations by maintaining a … Continue reading

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Stabilizing Integrators for Real-Time Physics

Dimitar Dinev, Tiantian Liu, Ladislav Kavan We present a new time integration method featuring excellent stability and energy conservation properties, making it particularly suitable for real-time physics. The commonly used backward Euler method is stable but introduces artificial damping. Methods … Continue reading

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Fast Fluid Simulations with Sparse Volumes on the GPU

Kui Wu, Nghia Truong, Cem Yuksel, Rama Hoetzlein We introduce efficient, large scale fluid simulation on GPU hardware using the fluid-implicit particle (FLIP) method over a sparse hierarchy of grids represented in NVIDIA GVDB Voxels. Our approach handles tens of … Continue reading

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Eurographics 2018

Direct Position-Based Solver for Stiff Rods A Physically Consistent Implicit Viscosity Solver for SPH Fluids Fast Fluid Simulations with Sparse Volumes on the GPU Efficient BVH-based Collision Detection with Ordering and Restructuring Hair Modeling and Simulation by Style Extended Narrow … Continue reading

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