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pressure_equation.cpp
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rSPECMICP SpecMiCP / ReactMiCP
pressure_equation.cpp
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/* =============================================================================
Copyright (c) 2014 - 2016
F. Georget <fabieng@princeton.edu> Princeton University
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from this
software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
============================================================================= */
#include "pressure_equation.hpp"
#include "boundary_conditions.hpp"
#include "variables_box.hpp"
#include "dfpm/solver/parabolic_driver.hpp"
#include "dfpm/meshes/mesh1d.hpp"
#include "specmicp_common/physics/constants.hpp"
#include "specmicp_common/physics/maths.hpp"
#include "specmicp_common/compat.hpp"
#include <iostream>
namespace
specmicp
{
namespace
dfpmsolver
{
// explicit template instanciation
template
class
ParabolicDriver
<
reactmicp
::
systems
::
unsaturated
::
PressureEquation
>
;
}
//end namespace dfpmsolver
namespace
reactmicp
{
namespace
systems
{
namespace
unsaturated
{
struct
SPECMICP_DLL_LOCAL
PressureEquation
::
PressureEquationImpl
{
uindex_t
m_id_component
;
PressureVariableBox
m_vars
;
std
::
vector
<
index_t
>
m_ideq
;
mesh
::
Mesh1DPtr
m_mesh
;
std
::
shared_ptr
<
BoundaryConditions
>
m_bcs
;
mesh
::
Mesh1D
*
mesh
()
{
return
m_mesh
.
get
();}
PressureVariableBox
&
vars
()
{
return
m_vars
;}
bool
node_has_equation
(
uindex_t
node
)
{
return
m_ideq
[
node
]
!=
no_equation
;
}
bool
is_gas_node
(
uindex_t
node
)
{
return
m_bcs
->
is_gas_node
(
node
);
}
index_t
id_equation
(
uindex_t
node
)
{
return
m_ideq
[
node
];
}
void
fix_node
(
uindex_t
node
)
{
m_ideq
[
node
]
=
no_equation
;
}
scalar_t
get_bc_gas_flux
(
uindex_t
node
)
{
return
m_bcs
->
get_flux_gas_dof
(
node
,
m_id_component
);
}
PressureEquationImpl
(
uindex_t
id_component
,
mesh
::
Mesh1DPtr
the_mesh
,
PressureVariableBox
&
the_vars
,
std
::
shared_ptr
<
BoundaryConditions
>
bcs
)
:
m_id_component
(
id_component
),
m_vars
(
the_vars
),
m_ideq
(
the_mesh
->
nb_nodes
(),
-
5
),
m_mesh
(
the_mesh
),
m_bcs
(
bcs
)
{}
scalar_t
get_diff
(
index_t
node_0
,
index_t
node_1
);
uindex_t
number_equations
();
void
compute_transport_rate
(
scalar_t
dt
,
const
Vector
&
displacement
);
};
PressureEquation
::
PressureEquation
(
uindex_t
id_component
,
mesh
::
Mesh1DPtr
the_mesh
,
PressureVariableBox
&
variables
,
std
::
shared_ptr
<
BoundaryConditions
>
bcs
)
:
base
(
the_mesh
->
nb_nodes
()),
m_impl
(
make_unique
<
PressureEquationImpl
>
(
id_component
,
the_mesh
,
variables
,
bcs
))
{
number_equations
();
}
PressureEquation
::~
PressureEquation
()
=
default
;
index_t
PressureEquation
::
id_equation_impl
(
index_t
id_dof
)
{
return
m_impl
->
id_equation
(
id_dof
);
}
mesh
::
Mesh1D
*
PressureEquation
::
get_mesh_impl
()
{
return
m_impl
->
mesh
();
}
void
PressureEquation
::
pre_nodal_residual_hook_impl
(
index_t
node
,
const
Vector
&
displacement
)
{}
void
PressureEquation
::
pre_residual_hook_impl
(
const
Vector
&
displacement
)
{
}
void
PressureEquation
::
post_residual_hook_impl
(
const
Vector
&
displacement
)
{
}
scalar_t
PressureEquation
::
PressureEquationImpl
::
get_diff
(
index_t
node_0
,
index_t
node_1
)
{
scalar_t
coeff_diff
=
0
;
// if (is_gas_node(node_0)) {
// coeff_diff = m_vars.resistance_gas_diffusivity(node_0)
// * m_vars.relative_gas_diffusivity(node_0);
// } else if (is_gas_node(node_1)) {
// coeff_diff = m_vars.resistance_gas_diffusivity(node_1)
// * m_vars.relative_gas_diffusivity(node_1);
// }
// else {
const
scalar_t
coeff_diff_0
=
m_vars
.
resistance_gas_diffusivity
(
node_0
)
*
m_vars
.
relative_gas_diffusivity
(
node_0
);
const
scalar_t
coeff_diff_1
=
m_vars
.
resistance_gas_diffusivity
(
node_1
)
*
m_vars
.
relative_gas_diffusivity
(
node_1
);
coeff_diff
=
average
<
Average
::
harmonic
>
(
coeff_diff_0
,
coeff_diff_1
);
// }
coeff_diff
*=
m_vars
.
binary_diffusion_coefficient
;
return
coeff_diff
;
}
//! \brief Compute the residuals inside 'element'
void
PressureEquation
::
residuals_element_impl
(
index_t
element
,
const
Vector
&
displacement
,
const
Vector
&
velocity
,
Eigen
::
Vector2d
&
element_residual
,
bool
use_chemistry_rate
)
{
element_residual
.
setZero
();
mesh
::
Mesh1D
*
m_mesh
=
m_impl
->
mesh
();
PressureVariableBox
&
vars
=
m_impl
->
m_vars
;
const
scalar_t
&
rt
=
vars
.
constants
.
rt
;
const
scalar_t
mass_coeff_0
=
m_mesh
->
get_volume_cell_element
(
element
,
0
);
const
scalar_t
mass_coeff_1
=
m_mesh
->
get_volume_cell_element
(
element
,
1
);
const
index_t
node_0
=
m_mesh
->
get_node
(
element
,
0
);
const
index_t
node_1
=
m_mesh
->
get_node
(
element
,
1
);
// Diffusion Cw
const
scalar_t
coeff_diff
=
m_impl
->
get_diff
(
node_0
,
node_1
);
const
scalar_t
diff_flux
=
coeff_diff
*
(
displacement
(
node_1
)
-
displacement
(
node_0
))
/
m_mesh
->
get_dx
(
element
)
/
rt
;
// Tot flux
scalar_t
flux_0
=
diff_flux
;
scalar_t
flux_1
=
-
diff_flux
;
flux_0
+=
m_impl
->
get_bc_gas_flux
(
node_0
)
/
rt
;
flux_1
+=
m_impl
->
get_bc_gas_flux
(
node_1
)
/
rt
;
const
scalar_t
section
=
m_mesh
->
get_face_area
(
element
);
flux_0
*=
section
;
flux_1
*=
section
;
// transient
if
(
m_impl
->
node_has_equation
(
node_0
))
{
const
scalar_t
porosity_0
=
vars
.
porosity
(
node_0
);
const
scalar_t
pressure_0
=
displacement
(
node_0
);
const
scalar_t
saturation_0
=
1.0
-
vars
.
liquid_saturation
(
node_0
);
const
scalar_t
transient_0
=
mass_coeff_0
/
rt
*
(
porosity_0
*
saturation_0
*
velocity
(
node_0
)
+
saturation_0
*
pressure_0
*
vars
.
porosity
.
velocity
(
node_0
)
-
porosity_0
*
pressure_0
*
vars
.
liquid_saturation
.
velocity
(
node_0
)
);
auto
res
=
transient_0
-
flux_0
;
if
(
use_chemistry_rate
)
{
res
+=
mass_coeff_0
*
vars
.
partial_pressure
.
chemistry_rate
(
node_0
);
}
element_residual
(
0
)
=
res
/
get_scaling
();
}
if
(
m_impl
->
node_has_equation
(
node_1
))
{
const
scalar_t
porosity_1
=
vars
.
porosity
(
node_1
);
const
scalar_t
pressure_1
=
displacement
(
node_1
);
const
scalar_t
saturation_1
=
1.0
-
vars
.
liquid_saturation
(
node_1
);
const
scalar_t
transient_1
=
mass_coeff_1
/
rt
*
(
porosity_1
*
saturation_1
*
velocity
(
node_1
)
+
saturation_1
*
pressure_1
*
vars
.
porosity
.
velocity
(
node_1
)
-
porosity_1
*
pressure_1
*
vars
.
liquid_saturation
.
velocity
(
node_1
)
);
auto
res
=
transient_1
-
flux_1
;
if
(
use_chemistry_rate
)
{
res
+=
mass_coeff_1
*
vars
.
partial_pressure
.
chemistry_rate
(
node_1
);
}
element_residual
(
1
)
=
res
/
get_scaling
();
}
}
uindex_t
PressureEquation
::
PressureEquationImpl
::
number_equations
()
{
uindex_t
neq
=
0
;
for
(
index_t
node:
m_mesh
->
range_nodes
())
{
switch
(
m_bcs
->
get_bcs_gas_dof
(
node
,
m_id_component
)){
case
IdBCs
::
FixedDof:
fix_node
(
node
);
break
;
default
:
m_ideq
[
node
]
=
neq
;
++
neq
;
}
}
return
neq
;
}
void
PressureEquation
::
number_equations
()
{
auto
neq
=
m_impl
->
number_equations
();
register_number_equations
(
neq
);
}
void
PressureEquation
::
compute_transport_rate
(
scalar_t
dt
,
const
Vector
&
displacement
)
{
m_impl
->
compute_transport_rate
(
dt
,
displacement
);
}
void
PressureEquation
::
PressureEquationImpl
::
compute_transport_rate
(
scalar_t
dt
,
const
Vector
&
displacement
)
{
const
scalar_t
&
rt
=
m_vars
.
constants
.
rt
;
const
MainVariable
&
saturation
=
m_vars
.
liquid_saturation
;
MainVariable
&
pressure
=
m_vars
.
partial_pressure
;
const
SecondaryTransientVariable
&
porosity
=
m_vars
.
porosity
;
for
(
index_t
node:
m_mesh
->
range_nodes
())
{
if
(
!
node_has_equation
(
node
))
continue
;
const
scalar_t
transient
=
(
(
porosity
(
node
)
*
(
1.0
-
saturation
(
node
))
*
displacement
(
node
))
-
(
porosity
.
predictor
(
node
)
*
(
1.0
-
saturation
.
predictor
(
node
))
*
pressure
.
predictor
(
node
))
)
/
(
rt
*
dt
);
const
scalar_t
chem_rates
=
(
-
pressure
.
chemistry_rate
(
node
)
);
pressure
.
transport_fluxes
(
node
)
=
transient
-
chem_rates
;
}
}
}
//end namespace unsaturated
}
//end namespace systems
}
//end namespace reactmicp
}
//end namespace specmicp
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