TO DO (July 9, 2004)

SIMULATION PROGRAM (a.out_512x512):

- improve initialization from scratch for the compressible case
  with FLOW_CASE=0

- add passive scalar

- fix the mean value of the streamfunction saved in movies


FILTERING PROGRAM (SV_filter)

- add Fourier filtering

- add recovery of velocity fields from filtered vorticity field


ANALYSIS PROGRAM (SV_analysis) [not even begun yet ....]

- calculation of energy spectra

- calculation of the PDFs of the field and the field of its derivatives




