This model draws on ideas discussed in
Edwards SF and Wilkinson DR 1982 The surface statistics of a granular aggregate. Proceedings of the Royal Society of London. Series A, 381(1780), 17-31.
and allows you to explore the rate of progress made by an Eden invasion process advancing along a linear ‘front’.
Click on the image to download and save the model NetLogo file. You will need to install NetLogo including the gradient extension to run this file.