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ImplicitSolveOperator.h
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Wed, Sep 4, 06:44
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rLAMMPS lammps
ImplicitSolveOperator.h
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#ifndef IMPLICIT_SOLVE_OPERATOR_H
#define IMPLICIT_SOLVE_OPERATOR_H
// ATC includes
#include "Array2D.h"
#include "MatrixLibrary.h"
#include "PhysicsModel.h"
// other includes
#include <vector>
#include <map>
namespace
ATC
{
// Forward class declarations
class
ATC_Coupling
;
class
FE_Engine
;
/**
* @class ImplicitSolveOperator
* @brief Helper class to compute matrix-free product for use with IML++ solvers
*/
class
ImplicitSolveOperator
{
public:
/** Constructor */
ImplicitSolveOperator
(
double
alpha
,
double
dt
);
/** Destructor */
virtual
~
ImplicitSolveOperator
()
{};
/** pure virtual operator to compute Ax, for equation Ax=b */
virtual
DENS_VEC
operator
*
(
const
DENS_VEC
&
x
)
const
;
/** pure virtual method to return the rhs vector b */
virtual
void
R
(
const
DENS_VEC
&
f
,
DENS_VEC
&
v
)
const
=
0
;
/** pure virtual method to return the rhs vector b */
virtual
DENS_VEC
r
()
const
;
/** pure virtual method to return preconditioner */
virtual
DiagonalMatrix
<
double
>
preconditioner
()
const
;
/** finalize */
virtual
void
solution
(
const
DENS_MAT
&
dx
,
DENS_MAT
&
x
)
const
=
0
;
virtual
void
rhs
(
const
DENS_MAT
&
r
,
DENS_MAT
&
rhs
)
const
=
0
;
protected:
int
n_
,
dof_
;
DENS_VEC
x0_
;
// condensed previous
mutable
DENS_VEC
x_
;
// condensed current
DENS_VEC
R0_
;
// condensed previous
mutable
DENS_VEC
R_
;
// condensed current
double
dt_
;
// timestep
double
alpha_
;
// implicit/explicit parameter (0 -> explicit, else implicit)
double
epsilon0_
;
// small parameter to compute increment
};
/**
* @class FieldImplicitSolveOperator
* @brief Class to perform A*x operation for electron temperature solution
*/
class
FieldImplicitSolveOperator
:
public
ImplicitSolveOperator
{
public:
/** Constructor */
FieldImplicitSolveOperator
(
ATC_Coupling
*
atc
,
FIELDS
&
fields
,
const
FieldName
f
,
const
Array2D
<
bool
>
&
rhsMask
,
const
PhysicsModel
*
physicsModel
,
double
simTime
,
double
dt
,
double
alpha
=
0.5
);
/** Destructor */
virtual
~
FieldImplicitSolveOperator
()
{};
virtual
void
R
(
const
DENS_VEC
&
f
,
DENS_VEC
&
v
)
const
;
virtual
void
solution
(
const
DENS_MAT
&
dx
,
DENS_MAT
&
x
)
const
;
virtual
void
rhs
(
const
DENS_MAT
&
r
,
DENS_MAT
&
rhs
)
const
;
protected:
void
to_all
(
const
VECTOR
&
free
,
MATRIX
&
all
)
const
;
void
to_free
(
const
MATRIX
&
all
,
VECTOR
&
free
)
const
;
FieldName
fieldName_
;
// field name of ODE to solve
ATC_Coupling
*
atc_
;
/** Pointer to atc */
const
PhysicsModel
*
physicsModel_
;
/** Pointer to PhysicsModel */
FIELDS
&
fields0_
;
// Reference to current fields (passed in constructor)
// Local fields
mutable
FIELDS
fields_
;
// full
// set of fixed nodes
std
::
map
<
int
,
int
>
freeNodes_
;
// masks
Array2D
<
bool
>
rhsMask_
;
Array
<
FieldName
>
massMask_
;
// right hand side of dot x = R(x)
mutable
FIELDS
rhs_
;
// full
// simulation time
double
time_
;
};
}
// namespace ATC
#endif
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