cs8803SC_lecture21

cs8803SC_lecture21 - Discrete Element Method (DEM):...

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1 CS8803SC Software and Hardware Cooperative Computing Physics Simulation Prof. Hyesoon Kim School of Computer Science Georgia Institute of Technology Physics Simulation • High degree data parallelism and computationally intensive • More usages: video games, virtual reality systems and computer-generated movies
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2 Physics Simulation • Rigid body simulation • Fluid simulation • Cloth simulation • Face simulation • Fast N-Body simulation: Astrophysics, molecular dynamics, plasma physics • Collision detection Rigid Body Simulation • Common characteristics in Eulerian fluid dynamics, cloth simulation: connectivity of the simulated elements (particles or grid cells) does not change.
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3 • Shape representation – Rigid body: a set of particles • Collision Detection: – Calculate the distances of particles – Neighborhood • Collision Reaction
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Unformatted text preview: Discrete Element Method (DEM): simulating granular materials Rigid Body Simulations on the GPU 5 steps 1. Computation of particle values Input: Rigid body position, rigid body quaternion Output: particle position, particle velocity, particle relative position 2. Grid generation Output: grid 3. Collision detection and reaction Output: particle force 4. Computation of momenta Output: rigid body linear momentum, rigid body angular momentum 5. Computation of position and quaternion Output: rigid body position, rigid body quaternion 4 Announcement More reading: GPU Gems3 Chapter 29 (handout) Please sign up the presentation schedule Lab #3 due: April 14 (M) 11:55 PM Look at examples in the pin directory Hint for question#1: MyPinTool.cpp...
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cs8803SC_lecture21 - Discrete Element Method (DEM):...

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