The uniform velocity advection problem is solved using the wave propagation algorithms.
2nd Order, no transverse corrections, no limiters, 3 grid levels, refinement ratio of 2 between levels:
GIF animation (8 MB)
MIFF animation (1 MB)
The user may set a number of parameters in bear.data controlling the number and size of grids. iBuffer controls the number of cells added around points flagged for refinement. MinimumGridPoints defines the minium extent of a grid. The following animations show the effect of various choices for the 2D advection problem. The size of the initial pulse has been increased in this example.
iBuffer=0 MinimumGridPoints=8 (mpeg animation, 235 K, miff animation, 1.6 MB) - Notice that fewer grids of larger size are generated.
iBuffer=1 MinimumGridPoints=4 (mpeg animation, 350 K, miff animation, 1.6 MB) - more grids, smaller grid size.
iBuffer=2 MinimumGridPoints=4 (mpeg animation, 350 K, miff animation, 1.6 MB) - even more grids, smaller grid size.
Download directory in compressed tar file format
(Note: Please unpack the tar file in your CLAW home directory.)
