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- Christopher Batty, Florence Bertails, Robert Bridson
- ACM Trans. Graph.
- 2007

Physical simulation has emerged as a compelling animation technique, yet current approaches to coupling simulations of fluids and solids with irregular boundary geometry are inefficient or cannot handle some relevant scenarios robustly. We propose a new variational approach which allows robust and accurate solution on relatively coarse Cartesian grids,… (More)

- Ben Houston, Michael Bang Nielsen, Christopher Batty, Ola Nilsson, Ken Museth
- ACM Trans. Graph.
- 2006

This article introduces the Hierarchical Run-Length Encoded (H-RLE) Level Set data structure. This novel data structure combines the best features of the DT-Grid (of Nielsen and Museth [2004]) and the RLE Sparse Level Set (of Houston et al. [2004]) to provide both optimal efficiency and extreme versatility. In brief, the H-RLE level set employs an RLE in a… (More)

- Christopher Batty, Robert Bridson
- Symposium on Computer Animation
- 2008

We present a fully implicit Eulerian technique for simulating free surface viscous liquids which eliminates artifacts in previous approaches, efficiently supports variable viscosity, and allows the simulation of more compelling viscous behaviour than previously achieved in graphics. Our method exploits a variational principle which automatically enforces… (More)

- Christopher Batty, Stefan Xenos, Ben Houston
- Comput. Graph. Forum
- 2010

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, accurate simulation requires quality Delaunay meshes and the use of circumcentric pressures. Second, meshes must align with potentially… (More)

- Ben Houston, Mark Wiebe, Christopher Batty
- SIGGRAPH Sketches
- 2004

The RLE sparse level set representation has many beneficial characteristics: (1) highly scalable, (2) fast to access randomly, (3) sequential traversal of the narrow band is optimal, (4) approximate distance values are provided throughout the bounding volume, and (5) easily adapted to work with the large majority of existing level set methods developed for… (More)

- Tyson Brochu, Christopher Batty, Robert Bridson
- ACM Trans. Graph.
- 2010

We introduce an Eulerian liquid simulation framework based on the Voronoi diagram of a potentially unorganized collection of pressure samples. Constructing the simulation mesh in this way allows us to place samples anywhere in the computational domain; we exploit this by choosing samples that accurately capture the geometry and topology of the liquid… (More)

- Christopher Batty, Andres Uribe, Basile Audoly, Eitan Grinspun
- ACM Trans. Graph.
- 2012

We present the first reduced-dimensional technique to simulate the dynamics of thin sheets of viscous incompressible liquid in three dimensions. Beginning from a discrete Lagrangian model for elastic thin shells, we apply the Stokes-Rayleigh analogy to derive a simple yet consistent model for viscous forces. We incorporate nonlinear surface tension forces… (More)

- Yonghao Yue, Breannan Smith, Christopher Batty, Changxi Zheng, Eitan Grinspun
- ACM Trans. Graph.
- 2015

We consider the simulation of dense foams composed of microscopic bubbles, such as shaving cream and whipped cream. We represent foam not as a collection of discrete bubbles, but instead as a continuum. We employ the <i>material point method</i> (MPM) to discretize a hyperelastic constitutive relation augmented with the Herschel-Bulkley model of… (More)

- Fang Da, Christopher Batty, Eitan Grinspun
- ACM Trans. Graph.
- 2014

We present a triangle mesh-based technique for tracking the evolution of three-dimensional <i>multimaterial interfaces</i> undergoing complex deformations. It is the first non-manifold triangle mesh tracking method to simultaneously maintain intersection-free meshes and support the proposed broad set of multimaterial remeshing and topological operations. We… (More)

- Fang Da, Christopher Batty, Christopher Wojtan, Eitan Grinspun
- ACM Trans. Graph.
- 2015

Simulating the delightful dynamics of soap films, bubbles, and foams has traditionally required the use of a fully three-dimensional many-phase Navier-Stokes solver, even though their visual appearance is completely dominated by the thin liquid surface. We depart from earlier work on soap bubbles and foams by noting that their dynamics are naturally… (More)