From cfc6c89487876aba3c82387d2ee5a7b0f050bd83 Mon Sep 17 00:00:00 2001
From: Kutalmis Bercin <kutalmis.bercin@esi-group.com>
Date: Thu, 23 Feb 2023 13:42:31 +0000
Subject: [PATCH] WIP: electricPotential: add space charge density hook
---
.../electricPotential/electricPotential.C | 19 ++++++++++++++++++-
.../electricPotential/electricPotential.H | 13 ++++++++++++-
2 files changed, 30 insertions(+), 2 deletions(-)
diff --git a/src/functionObjects/solvers/electricPotential/electricPotential.C b/src/functionObjects/solvers/electricPotential/electricPotential.C
index c88bb2686c2..c25569518b6 100644
--- a/src/functionObjects/solvers/electricPotential/electricPotential.C
+++ b/src/functionObjects/solvers/electricPotential/electricPotential.C
@@ -210,8 +210,10 @@ Foam::functionObjects::electricPotential::electricPotential
IOobject::scopedName(typeName, "V")
)
),
+ erhoName_(),
nCorr_(1),
- writeDerivedFields_(false)
+ writeDerivedFields_(false),
+ spaceChargeDensity_(false)
{
read(dict);
@@ -246,6 +248,11 @@ bool Foam::functionObjects::electricPotential::read(const dictionary& dict)
dict.readIfPresent("nCorr", nCorr_);
dict.readIfPresent("writeDerivedFields", writeDerivedFields_);
+ if (dict.readIfPresent("spaceChargeDensity", spaceChargeDensity_))
+ {
+ dict.readEntry("erho", erhoName_);
+ }
+
// If flow is multiphase
if (!phasesDict_.empty())
{
@@ -329,6 +336,9 @@ bool Foam::functionObjects::electricPotential::execute()
tmp<volScalarField> tsigma = this->sigma();
const volScalarField& sigma = tsigma();
+ tmp<volScalarField> tepsilon = this->epsilonm();
+ const auto& epsilon = tepsilon();
+
volScalarField& eV = getOrReadField(fieldName_);
for (label i = 1; i <= nCorr_; ++i)
@@ -340,6 +350,13 @@ bool Foam::functionObjects::electricPotential::execute()
fvOptions_(eV)
);
+ if (spaceChargeDensity_)
+ {
+ volScalarField& erho = getOrReadField(erhoName_);
+
+ eVEqn += erho/epsilon;
+ }
+
eVEqn.relax();
fvOptions_.constrain(eVEqn);
diff --git a/src/functionObjects/solvers/electricPotential/electricPotential.H b/src/functionObjects/solvers/electricPotential/electricPotential.H
index 4f015532deb..e8906684322 100644
--- a/src/functionObjects/solvers/electricPotential/electricPotential.H
+++ b/src/functionObjects/solvers/electricPotential/electricPotential.H
@@ -37,7 +37,7 @@ Description
The steady-state equation of the charge conservation:
\f[
- \nabla \cdot \left( \sigma \nabla V \right) = 0
+ \nabla \cdot \left(\sigma \nabla V \right) = 0
\f]
where
@@ -121,6 +121,8 @@ Usage
nCorr <label>;
writeDerivedFields <bool>;
fieldName <word>;
+ spaceChargeDensity <bool>;
+ erhoName <word>;
// Inherited entries
...
@@ -137,6 +139,9 @@ Usage
nCorr | Number of corrector iterations | label | no | 1
writeDerivedFields | Flag to write extra fields | bool | no | false
fieldName | Name of operand field | word | no | electricPotential:V
+ spaceChargeDensity | Flag to include space charge density | bool | no <!--
+ --> | false
+ erhoName | Name of space charge density field | word | no | -
\endtable
The inherited entries are elaborated in:
@@ -206,6 +211,9 @@ class electricPotential
//- Name of the operand field
word fieldName_;
+ //- Name of the space charge density field
+ word erhoName_;
+
//- Number of corrector iterations
label nCorr_;
@@ -213,6 +221,9 @@ class electricPotential
//- electric field, current density and free-charge density
bool writeDerivedFields_;
+ //- Flag to add the space charge density to the rhs of the potential eq
+ bool spaceChargeDensity_;
+
// Private Member Functions
--
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