AMR_Adv_CF_octree: This code advects a single scalar field with a velocity
field that is specified on faces.

It is a AMReX based code designed to run in parallel using MPI/OMP.
It uses the Fortran interfaces of AMReX.  The grids have an octree
structure with a grid size of 8.  No subcycling is used.

The directory Exec/SingleVortex includes a makefile and a sample inputs file.  
Plotfiles are generated that can be viewed with amrvis2d / amrvis3d. 
(CCSE's native vis / spreadsheet tool, downloadable separately from ccse.lbl.gov)
or with Visit.
