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An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Event-driven dynamics of rigid bodies interacting via discretized potentials
Ramses van Zon1, Jeremy Schofield
1Chemical Physics Theory Group, Department of Chemistry, University of Toronto, ON, Canada. rzon@chem.utoronto.ca
The Journal of Chemical Physics
|April 25, 2008
Summary
This study introduces a novel event-driven simulation framework for rigid bodies with discrete potential energies. The method efficiently handles interactions, enabling accurate simulations of complex systems.
Area of Science:
- Computational Physics
- Molecular Dynamics
- Statistical Mechanics
Background:
- Simulating systems with discrete energy levels, such as stepped or terraced potentials, presents computational challenges.
- Traditional methods may struggle with the abrupt changes in interaction energies inherent in such systems.
Purpose of the Study:
- To develop an efficient event-driven simulation framework for systems of rigid bodies interacting via terraced potentials.
- To provide a method for discretizing continuous potentials to accurately capture energy changes.
Main Methods:
- A discretization scheme for continuous potentials to identify interaction event times.
- Algorithms for computing free motion and interaction consequences in event-driven simulations.
- Illustration using rigid rods with orientation-dependent terraced potentials.
Main Results:
- The framework successfully models systems with discrete potential energy values.
- Interaction event times and subsequent motion are efficiently calculated based on the underlying smooth potential.
- The method is demonstrated to be effective for systems of interacting rigid bodies.
Conclusions:
- The proposed event-driven simulation framework offers an efficient approach for systems with terraced potentials.
- This method simplifies the handling of discrete energy changes in complex physical systems.
- The approach is applicable to various systems of interacting rigid bodies.
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