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Diffusion of a 2D Gas JS Model
written by Kostas Papamichalis
The Diffusion of a 2D Gas JS Model shows a 2D rectangle-shaped container is 2L long and L high that is divided into two equal square chambers D1 and D2 by a diaphragm. In the middle of the diaphragm, there is a gap of height h which is initially closed by a barrier. In the container, there are N identical but discrete particles. The particles interact in pairs. During each interaction, the momentum and energy of the pair are conserved. The interactions of particles with the walls of the container are elastic collisions.

At time t=0 all particles are in the left compartment D1 and have random positions and velocities. The initial velocity distribution of the gas, although it is not identical to the Maxwell-Boltzmann distribution, it is very "near" to this and, because of the p-p interactions, it converges extremely fast to it. Over time, particles are transferred through the gap from D1 to D2 and vice versa, so that the numbers of particles n1 and n2 in each chamber are changing. Over time, particles are transferred through the gap from D1 to D2 and vice versa, so that the numbers n1, n2 of particles in each chamber are changing. The program counts n1, n2 in real time and draws their graphs with time. On the other hand, a mathematical model has been composed, by which the variation of n1 and n2 is calculated over time and the corresponding graphs are depicted. The user compares the theoretical graphs with the experimental.

The user can select the values of the length h of the gap and the mean energy of the particles. He can also adjust the value of a statistical-phenomenological parameter, so that the agreement of the experimental data with the theoretical graphs be the best possible.
1 supplemental document is available
1 source code document is available
Subjects Levels Resource Types
Thermo & Stat Mech
- General
- Kinetic and Diffusive Processes
= Diffusion
= Kinetic Theory
- Lower Undergraduate
- Informal Education
- Upper Undergraduate
- Instructional Material
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- Educators
- General Publics
- text/html
- application/zip
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Mirror:
http://users.sch.gr/kostaspapamic…
Access Rights:
Free access
License:
This material is released under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 license.
Rights Holder:
Kostas Papamichalis
Record Creator:
Metadata instance created October 1, 2020 by kostas papamichalis
Record Updated:
October 9, 2020 by Wolfgang Christian
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AIP Format
K. Papamichalis, (2020), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=15556&DocID=5407).
AJP/PRST-PER
K. Papamichalis, Diffusion of a 2D Gas JS Model, (2020), <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=15556&DocID=5407>.
APA Format
Papamichalis, K. (2020). Diffusion of a 2D Gas JS Model. Retrieved October 27, 2020, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=15556&DocID=5407
Chicago Format
Papamichalis, Kostas. Diffusion of a 2D Gas JS Model. 2020. https://www.compadre.org/Repository/document/ServeFile.cfm?ID=15556&DocID=5407 (accessed 27 October 2020).
MLA Format
Papamichalis, Kostas. Diffusion of a 2D Gas JS Model. 2020. 27 Oct. 2020 <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=15556&DocID=5407>.
BibTeX Export Format
@misc{ Author = "Kostas Papamichalis", Title = {Diffusion of a 2D Gas JS Model}, Volume = {2020}, Number = {27 October 2020}, Year = {2020} }
Refer Export Format

%A Kostas Papamichalis
%T Diffusion of a 2D Gas JS Model
%D 2020
%U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=15556&DocID=5407
%O text/html

EndNote Export Format

%0 Electronic Source
%A Papamichalis, Kostas
%D 2020
%T Diffusion of a 2D Gas JS Model
%V 2020
%N 27 October 2020
%9 text/html
%U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=15556&DocID=5407


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Diffusion of a 2D Gas JS Model:

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relation by Wolfgang Christian

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