APS Excellence in Physics Education Award
November 2019

Education Prize Logo
Science SPORE Prize
November 2011

NSF Logo
The Open Source Physics Project is supported by NSF DUE-0442581.

Computer Program Detail Page

Item Picture
Confined Lennard-Jones Two Piston System Model
written by Wolfgang Christian
The Confined Lennard-Jones Two Piston System simulates a constant-energy two-dimensional system of particles confined by two frictionless pistons of equal mass M.   This computer model complements theoretical work describing the adiabatic expansion of an ideal gas using the quasi-static approximation.  Users can set the initial particle kinetic energy, Lennard Jones parameters, and the initial particle separation.  Slow-moving particles are color-coded as blue and fast particles are color-coded as yellow.  The time evolution of temperature, pressure, and piston speed are shown in a second window.

Particles in this model have unit mass and interact through pairwise Lennard-Jones forces and hard-wall contact forces.  The instantaneous temperature is computed using the average particle kinetic energy and the pressure is computed using the virial expansion.

The Confined Lennard-Jones Two Piston System is a supplemental simulation for the article "Evolution of ideal gas mixtures confined in an insulated container by two identical pistons" by Joaquim Anacleto, Joaquim Alberto C. Anacleto, and J. M. Ferreira in the American Journal of Physics 79(10), 1009-1014 (2011) and has been approved by the authors and the American Journal of Physics (AJP) editor.  The Confined Lennard-Jones Two Piston System 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_stp_md_ConfinedLennardJonesTwoPistonSystem.jar file will run the program if Java is installed.

Please note that this resource requires at least version 1.5 of Java.
1 source code document is available
Subjects Levels Resource Types
Mathematical Tools
- Probability
Thermo & Stat Mech
- Kinetic and Diffusive Processes
= Kinetic Theory
- Models
= Ideal Gas
= Lennard-Jones Potential
- Statistical Physics
- Upper Undergraduate
- Lower Undergraduate
- Instructional Material
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- Educators
- application/java
  • Currently 0.0/5

Want to rate this material?
Login here!


Access Rights:
Free access
Program released under GNU-GPL. Narrative is copyrighted.
License:
This material is released under a GNU General Public License Version 3 license.
Rights Holder:
Wolfgang Christian
PACSs:
01.50.hv
07.05.Tp
05.10.-a
Keyword:
statistical mechanics
Record Cloner:
Metadata instance created March 9, 2011 by Wolfgang Christian
Record Updated:
June 13, 2014 by Andreu Glasmann
Last Update
when Cataloged:
March 10, 2011

AAAS Benchmark Alignments (2008 Version)

4. The Physical Setting

4E. Energy Transformations
  • 6-8: 4E/M4. Energy appears in different forms and can be transformed within a system. Motion energy is associated with the speed of an object. Thermal energy is associated with the temperature of an object. Gravitational energy is associated with the height of an object above a reference point. Elastic energy is associated with the stretching or compressing of an elastic object. Chemical energy is associated with the composition of a substance. Electrical energy is associated with an electric current in a circuit. Light energy is associated with the frequency of electromagnetic waves.

AAAS Benchmark Alignments (1993 Version)

4. THE PHYSICAL SETTING

E. Energy Transformations
  • 4E (9-12) #2.  Heat energy in a material consists of the disordered motions of its atoms or molecules. In any interactions of atoms or molecules, the statistical odds are that they will end up with less order than they began?that is, with the heat energy spread out more evenly. With huge numbers of atoms and molecules, the greater disorder is almost certain.
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
W. Christian, Computer Program CONFINED LENNARD-JONES TWO PISTON SYSTEM MODEL, Version 1.0 (2011), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10836&DocID=2190).
AJP/PRST-PER
W. Christian, Computer Program CONFINED LENNARD-JONES TWO PISTON SYSTEM MODEL, Version 1.0 (2011), <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10836&DocID=2190>.
APA Format
Christian, W. (2011). Confined Lennard-Jones Two Piston System Model (Version 1.0) [Computer software]. Retrieved December 7, 2024, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10836&DocID=2190
Chicago Format
Christian, Wolfgang. "Confined Lennard-Jones Two Piston System Model." Version 1.0. https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10836&DocID=2190 (accessed 7 December 2024).
MLA Format
Christian, Wolfgang. Confined Lennard-Jones Two Piston System Model. Vers. 1.0. Computer software. 2011. Java 1.5. 7 Dec. 2024 <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10836&DocID=2190>.
BibTeX Export Format
@misc{ Author = "Wolfgang Christian", Title = {Confined Lennard-Jones Two Piston System Model}, Month = {March}, Year = {2011} }
Refer Export Format

%A Wolfgang Christian %T Confined Lennard-Jones Two Piston System Model %D March 10, 2011 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10836&DocID=2190 %O 1.0 %O application/java

EndNote Export Format

%0 Computer Program %A Christian, Wolfgang %D March 10, 2011 %T Confined Lennard-Jones Two Piston System Model %7 1.0 %8 March 10, 2011 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10836&DocID=2190


Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.

Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Style.org: Electronic References.

The Chicago Style presented is based on information from Examples of Chicago-Style Documentation.

The MLA Style presented is based on information from the MLA FAQ.

This resource is stored in a shared folder.

You must login to access shared folders.

Confined Lennard-Jones Two Piston System 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 Confined Lennard-Jones Two Piston System.

relation by Wolfgang Christian

Know of another related resource? Login to relate this resource to it.
Save to my folders

Supplements

Contribute

Related Materials

Similar Materials

OSP Projects:
Open Source Physics - EJS Modeling
Tracker
Physlet Physics
Physlet Quantum Physics
STP Book