The Open Source Physics website will be unavailable Friday evening through Saturday afternoon as electrical work occurs in the American Center of Physics server room. Down time will begin at 6PM Eastern Time on Friday. Service is expected to resume by 6PM on Saturday, July 30.
The Gray-Scott Reaction Diffusion Model displays the spatial concentration of chemical species U and V under the influence of the reaction U+2V->3V and V->P. The simulation models this reaction in an open system with a constant addition of U and removal of V due to a flow rate f and with the removal of V by the reaction V->P with reaction rate k. Combining this autocatalytic process with diffusion results in pattern formation that depends on the f and k rates and on the U and V diffusivities Du and Dv. This reaction diffusion system has a surprising variety of spatiotemporal patterns when starting in the initial state U=1 and V=0 except for a square grid at the center where U=1/2 and V=1/4.
The Gray-Scott Reaction Diffusion Model was developed using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the jar file will run the program if Java is installed. You can modify this simulation if you have EJS installed by right-clicking within the map and selecting "Open Ejs Model" from the pop-up menu item.
Please note that this resource requires
at least version 1.6 of
Gray Scott Reaction Diffusion Source Code
The source code zip archive contains an EJS-XML representation of the Gray Scott Reaction Diffusion Model. Unzip this archive in your EJS workspace to compile and run this model using EJS. download 44kb .zip
Last Modified: May 26, 2012
%0 Computer Program %A Christian, Wolfgang %D May 26, 2012 %T Gray Scott Reaction Diffusion Model %8 May 26, 2012 %U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12017&DocID=2872
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.