Author Archives: christopherbatty

Shortest Path to Boundary for Self-Intersecting Meshes

He Chen, Elie Diaz, Cem Yuksel We introduce a method for efficiently computing the exact shortest path to the boundary of a mesh from a given internal point in the presence of self-intersections. We provide a formal definition of shortest … Continue reading

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Interactive Hair Simulation on the GPU using ADMM

Gilles Daviet We devise a local–global solver dedicated to the simulation of Discrete Elastic Rods (DER) with Coulomb friction that can fully leverage the massively parallel compute capabilities of moderns GPUs. We verify that our simulator can reproduce analytical results … Continue reading

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Fluid Cohomology

Hang Yin, Mohammad Sina Nabizadeh, Baichun Wu, Stephanie Wang, Albert Chern The vorticity-streamfunction formulation for incompressible inviscid fluids is the basis for many fluid simulation methods in computer graphics, including vortex methods, streamfunction solvers, spectral methods, and Monte Carlo methods. … Continue reading

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A Contact Proxy Splitting Method for Lagrangian Solid-Fluid Coupling

Tianye Xie, Minchen Li, Yin Yang, Chenfanfu Jiang We present a robust and efficient method for simulating Lagrangian solid-fluid coupling based on a new operator splitting strategy. We use variational formulations to approximate fluid properties and solid-fluid interactions, and introduce … Continue reading

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SIGGRAPH North America 2023

A Contact Proxy Splitting Method for Lagrangian Solid-Fluid Coupling Second-order Stencil Descent for Interior-point Hyperelasticity A Sparse Distributed Gigascale Resolution Material Point Method PolyStokes: A Polynomial Model Reduction Method for Viscous Fluid Simulation Data-Free Learning of Reduced-Order Kinematics Generalizing Shallow … Continue reading

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Impulse Fluid Simulation

Fan Feng, Jinyuan Liu, Shiying Xiong, Shuqi Yang, Yaorui Zhang, Bo Zhu We propose a new incompressible Navier–Stokes solver based on the impulse gauge transformation. The mathematical model of our approach draws from the impulse–velocity formulation of Navier–Stokes equations, which … Continue reading

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Fast GPU-Based Two-Way Continuous Collision Handling

Tianyu Wang, Jiong Chen, Dongping Li, Xiaowei Liu, Huamin Wang, Kun Zhou Step-and-project is a popular way to simulate non-penetrated deformable bodies in physically-based animation. First integrating the system in time regardless of contacts and post resolving potential intersections practically … Continue reading

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Efficient and Stable Simulation of Inextensible Cosserat Rods by a Compact Representation

Chongyao Zhao, Jinkeng Lin, Tianyu Wang, Hujun Bao, Jin Huang Piecewise linear inextensible Cosserat rods are usually represented by Cartesian coordinates of vertices and quaternions on the segments. Such representations use excessive degrees of freedom (DOFs), and need many additional … Continue reading

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Nonlinear Compliant Modes for Large-Deformation Analysis of Flexible Structures

Simon Duenser, Bernhard Thomaszewski, Roi Poranne, Stelian Coros Many flexible structures are characterized by a small number of compliantmodes, i.e., large deformation paths that can be traversed with little mechanical effort, whereas resistance to other deformations is much stiffer. Predicting … Continue reading

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Interactive design of 2D car profiles with aerodynamic feedback

Nicolas Rosset, Guillaume Cordonnier, Regis Duvigneau, Adrien Bousseau The design of car shapes requires a delicate balance between aesthetic and performance. While fluid simulation provides the means to evaluate the aerodynamic performance of a given shape, its computational cost hinders … Continue reading

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