4. METHOD OF SOLUTION
SOLA-ICE uses a finite-difference technique,
which includes the Implicit Continuous-fluid Eulerian (ICE) method
as an optional feature, to solve the Navier-Stokes equations in
two-dimensional plane or cylindrical coordinates. A wide variety
of boundary conditions are possible, including free-slip, no-slip,
specified inflow-outflow, continuative outflow, and periodic
boundaries. Implicit pressure gradients are used to eliminate the
Courant condition as a stability requirement, making the code
useful at all Mach numbers.