WriteVelocity
Normally, hydrodynamic variables
are written at each output in the output directory (see OutputDir) with
an extension that specifies the output number. For instance, the
initial velocity field is written in 'gasvrad0.dat'
and 'gasvtheta0.dat', then
the first output is written in 'gasvrad1.dat'
and 'gasvtheta1.dat', etc.
If one sets WriteVelocity to
NO or to FALSE, all velocity outputs are written to 'gasvrad0.dat' and 'gasvtheta0.dat',
which are thus overwritten at each output. Therefore, setting this
parameter to NO does not save disk writing time, but it may be useful
in case of low disk quota, or when one is not interested in the
velocity field. Also, having the hydrodynamics fields of the last
output always written to a file allows to perform a restart.