The type of equation which is to be solved is specified through the EquationType
SOLVERINFO option in the session file. This can be set as in table 6.1. At present, the Steady
non-symmetric solvers cannot be used in parallel.
The solver info are listed below:
EqType | Explicit | Diagonally Implicit | IMEX | Implicit |
UnsteadyAdvection | ✓ | |||
UnsteadyDiffusion | ✓ | ✓ | ||
UnsteadyAdvectionDiffusion | ✓ | |||
UnsteadyInviscidBurger | ✓ | |||
Continuous
for a C0-continuous Galerkin (CG) projection.
Discontinuous
for a discontinous Galerkin (DG) projection.Explicit
Requires the use of an explicit time integration scheme.
Implicit
Requires the use of a diagonally implicit, IMEX or Implicit scheme.Explicit
Requires the use of an explicit or IMEX time integration scheme.
Implicit
Not supported at present.NonConservative
(for CG only).
WeakDG
(for DG only).LDG
.Upwind
.
The following parameters can be specified in the PARAMETERS
section of the session file:
epsilon
: sets the diffusion coefficient ϵ.d00
, d11
, d22
: sets the diagonal entries of the diffusion tensor D. lambda
: sets the reaction coefficient λ.
The following functions can be specified inside the CONDITIONS
section of the session
file:
AdvectionVelocity
: specifies the advection velocity V.
InitialConditions
: specifies the initial condition for unsteady problems.
Forcing
: specifies the forcing function f.