Bubbles Alive

We propose a hybrid method for simulating multiphase fluids such as bubbly water. The appearance of subgrid visual details is improved by incorporating a new bubble model based on smoothed particle hydrodynamics (SPH) into an Eulerian grid-based simulation that handles background flows of large bodies of water and air. To overcome the difficulty in simulating […]

Posted by christopherbatty on May 17th, 2008 | Comments Off on Bubbles Alive Posted in Fluids

Spline Joints for Multibody Dynamics

Spline joints are a novel class of joints that can model general scleronomic constraints for multibody dynamics based on the minimalcoordinates formulation. The main idea is to introduce spline curves and surfaces in the modeling of joints: We model 1-DOF joints using splines on SE(3), and construct multi-DOF joints as the product of exponentials of […]

Posted by christopherbatty on May 13th, 2008 | Comments Off on Spline Joints for Multibody Dynamics Posted in Rigid bodies

Porous Flow in Particle-Based Fluid Simulations

This paper presents the simulation of fluid flowing through a porous deformable material. We introduce the physical principles governing porous flow, expressed by the Law of Darcy, into the Smoothed Particle Hydrodynamics (SPH) framework for simulating fluids and deformable objects. Contrary to previous SPH approaches, we simulate porous flow at a macroscopic scale, making abstraction […]

Posted by christopherbatty on May 8th, 2008 | Comments Off on Porous Flow in Particle-Based Fluid Simulations Posted in Fluids

Discrete Elastic Rods

We present a discrete treatment of adapted framed curves, parallel transport, and holonomy, thus establishing the language for a discrete geometric model of thin flexible rods with arbitrary cross section and undeformed configuration. Our approach differs from existing simulation techniques in the graphics and mechanics literature both in the kinematic description — we represent the […]

Posted by christopherbatty on May 7th, 2008 | Comments Off on Discrete Elastic Rods Posted in Hair/Rods/Rope

Fast Viscoelastic Behavior with Thin Features

We introduce a method for efficiently animating a wide range of deformable materials. We combine a high resolution surface mesh with a tetrahedral finite element simulator that makes use of frequent re-meshing. This combination allows for fast and detailed simulations of complex elastic and plastic behavior. We significantly expand the range of physical parameters that […]

Posted by christopherbatty on May 2nd, 2008 | 2 Comments Posted in Collisions, Deformables, Fluids
Newer Entries »