Eclpss Models

Models to Download

Game of Life

A Game of Life model can be downloaded.

This model

has a Border-Border grid, with a border depth of 1
starts the with 100 percent live (red) cells
displays the simulated grid region in addition to the border cells

Heat Diffusion

This Heat Diffusion downloadable model has

has a grid size of 100x50
has a Border-Border grid, with a border depth of 0
represents the temperatures colored as the extremes of hot and cold
keeps the upper-left and lower-right corners hot throughout the simulation.
the graphics display of temperature is updated every 1000 time steps

Take a look at the animated gif!

Heat Diffusion 3D

This Heat Diffusion downloadable model is Heat Diffusion in three dimensions.

Regarding the graphical display: think of the 3-dimensional grid as a box that has been "unfolded" and flattened out. What you see are the faces of the grid.

Random Heat Diffusion

This Heat Diffusion downloadable model has a certain percentage (see percentHot in the model's static variables) of the cells as hot cells. The locations of these hot cells is random, as is whether or not the cells stay hot, or cool down during the simulation. This model is a modification of the HeatDiffusion model.

Eclpss Graphics API

This GraphModel downloadable model shows how you can use the Eclpss Graphics API to produce graphic plots of data as your simulation is running.

Running the models

To run the models:
1. Launch Eclpss, either using Java Web Start or the Jar file
2. Select Tools | Model Runner
To look at the implementation
1. Launch Eclpss, either using Java Web Start or the Jar file
2. Select File | Open | Model

Easy Modifications to Try

Select File | Open | Model
- For the Game of Life Model:
  - Select Grids, and change the boundaries to Torus Torus
  - In Pre-Components, select LifePopulator, edit the "Local Methods", and make the following changes:
```
Random r = new Random();
//r.setSeed(1);
percentAlive = r.nextInt(101); // generate a random number of alive cells
```
- For the Heat Diffusion Model:
  - Select Grids, and change the size of the X (and/or) Y dimension; If you make the grid too large, based on your monitor, you might not be able to display it!
  - Change the Simulation Time - have it run for a longer or shorter amount of time.
  - Use the Graphical Generator to change the color display
Select Save after each change, then Run Model.

Elaine Wenderholm

Last modified: Wed Apr 14 16:43:16 EDT 2004