Computation times

00:39.247 total execution time for 4 files from examples/12-fluids:

Example	Time	Mem (MB)
Explore Fluids mesh (01-fluids_mesh.py)	00:16.340	0.0
Explore Fluids results (02-fluids_results.py)	00:12.596	0.0
Explore Fluids models (00-fluids_model.py)	00:05.421	0.0
Compute iso-surfaces on fluid models (03-fluids_isosurface.py)	00:04.891	0.0