Real-Time Simulation and Rendering of 3D Fluids

GPU Gems 3 is out, and it contains a chapter on real-time 3D simulation & rendering of fluids (smoke and liquids) on the GPU, and is available as a free sample chapter online. You may have seen some of these results before on Keenan Crane’s website. GPU Gems 3

Posted by christopherbatty on August 18th, 2007 | Comments Off on Real-Time Simulation and Rendering of 3D Fluids Posted in Fluids

Animating Corrosion and Erosion

In this paper, we present a simple method for animating natural phenomena such as erosion, sedimentation, and acidic corrosion. We discretize the appropriate physical or chemical equations using finite differences, and we use the results to modify the shape of a solid body. We remove mass from an object by treating its surface as a […]

Posted by christopherbatty on August 9th, 2007 | Comments Off on Animating Corrosion and Erosion Posted in Deformables, Fluids, Rigid bodies

Velocity-Based Shock Propagation for Multibody Dynamics Animation

Multibody dynamics are used in interactive and real-time applications, ranging from computer games to virtual prototyping, and engineering. All these areas strive towards faster and larger scale simulations. Particularly challenging are large-scale simulations with highly organized and structured stacking. We present a stable, robust, and versatile method for multibody dynamics simulation. Novel contributions include a […]

Posted by christopherbatty on August 9th, 2007 | Comments Off on Velocity-Based Shock Propagation for Multibody Dynamics Animation Posted in Rigid bodies

Impulse-Based Dynamic Simulation in Linear Time

This paper describes an impulse-based dynamic simulation method for articulated bodies which has a linear time complexity. Existing linear-time methods are either based on a reduced-coordinate formulation or on Lagrange multipliers. The impulse-based simulation has advantages over these well-known methods. Unlike reduced-coordinate methods, it handles nonholonomic constraints like velocity-dependent ones and is very easy to […]

Posted by christopherbatty on August 7th, 2007 | Comments Off on Impulse-Based Dynamic Simulation in Linear Time Posted in Rigid bodies

Fast Fluid Simulation using Residual Distribution Schemes

We present a fast method for physically-based animation of fluids on adaptive, unstructured meshes. Our algorithm is capable of correctly handling large-scale fluid forces, as well as their interaction with elastic objects. Our adaptive mesh representation can resolve boundary conditions accurately while maintaining a high level of efficiency. Fast Fluid Simulation using Residual Distribution Schemes

Posted by christopherbatty on August 7th, 2007 | Comments Off on Fast Fluid Simulation using Residual Distribution Schemes Posted in Fluids

Solving General Shallow Wave Equations on Surfaces

We propose a new framework for solving General Shallow Wave Equations (GSWE) in order to efficiently simulate water flows on solid surfaces under shallow wave assumptions. Within this framework, we develop implicit schemes for solving the external forces applied to water, including gravity and surface tension. We also present a two-way coupling method to model […]

Posted by christopherbatty on August 7th, 2007 | Comments Off on Solving General Shallow Wave Equations on Surfaces Posted in Fluids

Stable Advection-Reaction-Diffusion Systems

Turing first theorized that many biological patterns arise through the processes of reaction and diffusion. Subsequently, reaction-diffusion systems have been studied in many fields, including computer graphics. We first show that for visual simulation purposes, reaction-diffusion equations can be made unconditionally stable using a variety of straightforward methods. Second, we propose an anisotropy embedding that […]

Posted by christopherbatty on August 7th, 2007 | Comments Off on Stable Advection-Reaction-Diffusion Systems Posted in Fluids

Real-Time Breaking Waves for Shallow Water Simulations

We present a new method for enhancing shallow water simulations by the effect of overturning waves. While full 3D fluid simulations can capture the process of wave breaking, this is beyond the capabilities of a pure height field model. 3D simulations, however, are still too expensive for real-time applications, especially when large bodies of water […]

Posted by christopherbatty on August 7th, 2007 | Comments Off on Real-Time Breaking Waves for Shallow Water Simulations Posted in Uncategorized

Many Worlds Browsing for Control of Multibody Dynamics

Animation techniques for controlling passive simulation are commonly based on an optimization paradigm: the user provides goals a priori, and sophisticated numerical methods minimize a cost function that represents these goals. Unfortunately, for multibody systems with discontinuous contact events these optimization problems can be highly nontrivial to solve, and many-hour offline optimizations, unintuitive parameters, and […]

Posted by christopherbatty on August 7th, 2007 | Comments Off on Many Worlds Browsing for Control of Multibody Dynamics Posted in Rigid bodies

SIGGRAPH Sketches

With SIGGRAPH kicking off next week, thought I’d iterate a (probably incomplete) list of primarily physics-oriented sketches. Is This For Real? Implementing Wave Particles for Real-Time Water Waves With Object Interaction Let’s Get Physical Modal Locomotion: Controlling Passive Elastic Dynamics Contact Trees: Adaptive Contact Sampling for Robust Dynamics Blobtacular: Surfacing Particle Systems in “Pirates of […]

Posted by christopherbatty on August 1st, 2007 | Comments Off on SIGGRAPH Sketches Posted in Uncategorized