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written by Wolfgang Christian
The Molecular Dynamics Adiabatic Piston model shows two gas samples within a horizontal cylinder that is divided by an insulated piston that moves without friction.  It is a supplemental simulation for the article by Eric Gislason and has been approved by the authors and the AJP editor.  Initially the piston is held (locked) in place, and the pressures of the gases on each side of the piston are different.  When the piston is released it undergoes oscillations that are damped due to collisions of the particles with the piston, and it finally ends up at rest.  The final pressures of the two gases are equal, but the final temperatures are typically different.

All particles in the Molecular Dynamics Adiabatic Piston model have unit mass and interact through pairwise Leonard-Jones forces.  Gas particles interact with the container walls via a spring (Hooke's law) force and this particle-wall interaction is used to move the piston and to compute the pressure.  The temperature is computed from the average kinetic energy. The piston position and the temperature and pressure are shown as functions of time in additional windows.

The Molecular Dynamics Adiabatic Piston model was created using the Easy Java Simulations (EJS) modeling tool.  It is distributed as a ready-to-run (compiled) Java archive.  Double clicking the ejs_md_AdiabaticPiston.jar file will run the program if Java is installed.

Please note that this resource requires at least version 1.5 of Java (JRE).
View the source code document attached to this resource
Subjects Levels Resource Types
Thermo & Stat Mech
- Models
= Lennard-Jones Potential
- Upper Undergraduate
- Instructional Material
= Interactive Simulation
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- Learners
- Educators
- application/java
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Access Rights:
Free access
License:
This material is released under a GNU General Public License Version 3 license. Additional information is available.
Rights Holder:
Wolfgang Christian
Record Cloner:
Metadata instance created July 13, 2010 by Wolfgang Christian
Record Updated:
June 10, 2014 by Andreu Glasmann
Last Update
when Cataloged:
October 9, 2008
Other Collections:

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Record Link
AIP Format
W. Christian, Computer Program MOLECULAR DYNAMICS ADIABATIC PISTON MODEL (2010), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10260&DocID=1765).
AJP/PRST-PER
W. Christian, Computer Program MOLECULAR DYNAMICS ADIABATIC PISTON MODEL (2010), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10260&DocID=1765>.
APA Format
Christian, W. (2010). Molecular Dynamics Adiabatic Piston Model [Computer software]. Retrieved July 25, 2014, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10260&DocID=1765
Chicago Format
Christian, Wolfgang. "Molecular Dynamics Adiabatic Piston Model." http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10260&DocID=1765 (accessed 25 July 2014).
MLA Format
Christian, Wolfgang. Molecular Dynamics Adiabatic Piston Model. Computer software. 2010. Java (JRE) 1.5. 25 July 2014 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10260&DocID=1765>.
BibTeX Export Format
@misc{ Author = "Wolfgang Christian", Title = {Molecular Dynamics Adiabatic Piston Model}, Month = {October}, Year = {2008} }
Refer Export Format

%A Wolfgang Christian
%T Molecular Dynamics Adiabatic Piston Model
%D October 9, 2008
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10260&DocID=1765
%O application/java

EndNote Export Format

%0 Computer Program
%A Christian, Wolfgang
%D October 9, 2008
%T Molecular Dynamics Adiabatic Piston Model
%8 October 9, 2008
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10260&DocID=1765


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Molecular Dynamics Adiabatic Piston Model:

Is Based On Easy Java Simulations Modeling and Authoring Tool

The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Molecular Dynamics Adiabatic Piston Model.

relation by Wolfgang Christian

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