Browsing Mathematics (Faculty of) by Author "Batty, Christopher"
Now showing items 21-30 of 30
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Power Diagrams and Sparse Paged Grids for High Resolution Adaptive Liquids
Aanjaneya, Mridul; Gao, Ming; Liu, Haixiang; Batty, Christopher; Sifakis, Eftychios (Association for Computing Machinery, 2017-07-20)We present an efficient and scalable octree-inspired fluid simulation framework with the flexibility to leverage adaptivity in any part of the computational domain, even when resolution transitions reach the free surface. ... -
A Practical Method for High-Resolution Embedded Liquid Surfaces
Goldade, Ryan; Batty, Christopher; Wojtan, Chris (Wiley, 2016-05-01)Combining high-resolution level set surface tracking with lower resolution physics is an inexpensive method for achieving highly detailed liquid animations. Unfortunately, the inherent resolution mismatch introduces several ... -
A practical octree liquid simulator with adaptive surface resolution
Ando, Ryoichi; Batty, Christopher (Association for Computing Machinery, 2020-07)We propose a new adaptive liquid simulation framework that achieves highly detailed behavior with reduced implementation complexity. Prior work has shown that spatially adaptive grids are efficient for simulating large-scale ... -
Preserving Geometry and Topology for Fluid Flows with Thin Obstacles and Narrow Gaps
Azevedo, Vinicius C.; Batty, Christopher; Oliveira, Manuel M. (Association for Computing Machinery, 2016-07-01)Fluid animation methods based on Eulerian grids have long struggled to resolve flows involving narrow gaps and thin solid features. Past approaches have artificially inflated or voxelized boundaries, although this sacrifices ... -
Regional Time Stepping for SPH
Goswami, Prashant; Batty, Christopher (The Eurographics Association, 2014)This paper presents novel and efficient strategies to spatially adapt the amount of computational effort applied based on the local dynamics of a free surface flow, for classic weakly compressible SPH (WCSPH). Using a ... -
A simple finite volume method for adaptive viscous liquids
Batty, Christopher; Houston, Ben (Association for Computing Machinery, 2011-08)We present the first spatially adaptive Eulerian fluid animation method to support challenging viscous liquid effects such as folding, coiling, and variable viscosity. We propose a tetrahedral node-based embedded finite ... -
Surface-Only Liquids
Da, Fang; Hahn, David; Batty, Christopher; Wojtan, Chris; Grinspun, Eitan (Association for Computing Machinery, 2016-07-01)We propose a novel surface-only technique for simulating incompressible, inviscid and uniform-density liquids with surface tension in three dimensions. The liquid surface is captured by a triangle mesh on which a Lagrangian ... -
Tetrahedral Embedded Boundary Methods for Accurate and Flexible Adaptive Fluids
Batty, Christopher; Xenos, Stefan; Houston, Ben (Wiley, 2010-05)When simulating fluids, tetrahedral methods provide flexibility and ease of adaptivity that Cartesian grids find difficult to match. However, this approach has so far been limited by two conflicting requirements. First, ... -
A Unified Simplicial Model for Mixed-Dimensional and Non-Manifold Deformable Elastic Objects
Chang, Jumyung; Da, Fang; Grinspun, Eitan; Batty, Christopher (ACM, 2019-07)We present a unified method to simulate deformable elastic bodies consisting of mixed-dimensional components represented with potentially non-manifold simplicial meshes. Building on well-known simplicial rod, shell, and ... -
Variational Stokes: A Unified Pressure-viscosity Solver for Accurate Viscous Liquids
Larionov, Egor; Batty, Christopher; Bridson, Robert (Association for Computing Machinery, 2017-07-20)We propose a novel unsteady Stokes solver for coupled viscous and pressure forces in grid-based liquid animation which yields greater accuracy and visual realism than previously achieved. Modern fluid simulators treat ...