This example uses the coupled Noble 98 - HMT cellular model within a 2D bicubic-Hermite sheet of tissue with the fibre angle varying from 10° at the lower edge of the sheet, to 90° in the middle of the sheet, and back to 10° at the upper edge (kind of visible in the images below) - but the mesh has been chopped down for testing purposes. The geometry shown below is available, just check the example command file for the file names. There is a 2:1 (fibre:cross fibre) conductivity ratio.

The model is electrically stimulated in the lower left corner. The sheet of tissue is free to deform as the propagating electrical wave triggers the active contraction at the cell level - with the boundary conditions that the extreme lower left node is held fixed in space and the extreme lower right node is free to slide along the horizontal axis.

The images below illustrate some results from this example, begining at time 0ms at the top left and running up to 550ms for the bottom right, in even steps of 50ms.

2D sheet simulation with varying fibre orientation

draw.com can be used to visualise the results of this simulation.