Uguide table of fields

This table should give a list of the field names commonly written by the OpenFOAM-Solver.

It was inspired by the discussion What's the meaning of variables in the computed results in the MessageBoard:

Fields written by OpenFOAM
Filename	Description	Dimension
U	Velocity	$\frac{m}{s}$
U_0	Velocity at previous timestep (needed for restarting higher order time-stepping schemes)	$\frac{m}{s}$
phi	Flow through cell faces	$\frac{m^3}{s}$
p	Pressure	$\frac{m^2}{s^2}$
epsilon	Turbulence dissipation rate	$\frac{m^2}{s^3}$
k	Turbulence kinetic energy	$\frac{m^2}{s^2}$
rho	Gas density	$\frac{kg}{m^3}$
alpha	Dispersed phase volume fraction	-
Theta	Granular temperature	$\frac{m^2}{s^2}$