Defines incompressible Navier-Stokes problems as a
special case of general elliptic systems.
— Class: <NAVIER-STOKES-PROBLEM>
Navier-Stokes problem.
Superclasses: <ELLSYS-PROBLEM>
— Function: NAVIER-STOKES-INERTIA-COEFFICIENTS DIM REYNOLDS
Yields a quasi-Newton linearization of the term u . grad u which
has the form
a Re u0 . grad u + b Re u . grad u0 = (a + b - 1) Re u0 . grad u0
a and b are given by the values of the special variables *alpha* and
*beta*.