ENH: overPotentialFoam: Make consistent. see #1749.

- createFields extends potentialFoam
- (so registers 'p' field, same as potentialFoam)
- writephi is optional as in potentialFoam

applications/solvers/basic/potentialFoam/overPotentialFoam/createFields.H

@@ -1,125 +1,4 @@
-Info<< "Reading velocity field U\n" << endl;
+#include "../createFields.H"
-volVectorField U
-(
-    IOobject
-    (
-        "U",
-        runTime.timeName(),
-        mesh,
-        IOobject::MUST_READ,
-        IOobject::AUTO_WRITE
-    ),
-    mesh
-);
-
-// Initialise the velocity internal field to zero
-U = dimensionedVector(U.dimensions(), Zero);
-
-surfaceScalarField phi
-(
-    IOobject
-    (
-        "phi",
-        runTime.timeName(),
-        mesh,
-        IOobject::NO_READ,
-        IOobject::AUTO_WRITE
-    ),
-    fvc::flux(U)
-);
-
-if (args.found("initialiseUBCs"))
-{
-    U.correctBoundaryConditions();
-    phi = fvc::flux(U);
-}
-
-
-// Construct a pressure field
-// If it is available read it otherwise construct from the velocity BCs
-// converting fixed-value BCs to zero-gradient and vice versa.
-
-// Allow override from command-line -pName option
-const word pName = args.getOrDefault<word>("pName", "p");
-
-// Infer the pressure BCs from the velocity
-wordList pBCTypes
-(
-    U.boundaryField().size(),
-    fixedValueFvPatchScalarField::typeName
-);
-
-forAll(U.boundaryField(), patchi)
-{
-    if (U.boundaryField()[patchi].fixesValue())
-    {
-        pBCTypes[patchi] = zeroGradientFvPatchScalarField::typeName;
-    }
-}
-
-// Note that registerObject is false for the pressure field. The pressure
-// field in this solver doesn't have a physical value during the solution.
-// It shouldn't be looked up and used by sub models or boundary conditions.
-Info<< "Constructing pressure field " << pName << nl << endl;
-volScalarField p
-(
-    IOobject
-    (
-        pName,
-        runTime.timeName(),
-        mesh,
-        IOobject::READ_IF_PRESENT,
-        IOobject::NO_WRITE,
-        false
-    ),
-    mesh,
-    dimensionedScalar(sqr(dimVelocity), Zero),
-    pBCTypes
-);
-
-// Infer the velocity potential BCs from the pressure
-wordList PhiBCTypes
-(
-    p.boundaryField().size(),
-    zeroGradientFvPatchScalarField::typeName
-);
-
-forAll(p.boundaryField(), patchi)
-{
-    if (p.boundaryField()[patchi].fixesValue())
-    {
-        PhiBCTypes[patchi] = fixedValueFvPatchScalarField::typeName;
-    }
-}
-
-Info<< "Constructing velocity potential field Phi\n" << endl;
-volScalarField Phi
-(
-    IOobject
-    (
-        "Phi",
-        runTime.timeName(),
-        mesh,
-        IOobject::READ_IF_PRESENT,
-        IOobject::NO_WRITE
-    ),
-    mesh,
-    dimensionedScalar(dimLength*dimVelocity, Zero),
-    PhiBCTypes
-);
-
-label PhiRefCell = 0;
-scalar PhiRefValue = 0;
-setRefCell
-(
-    Phi,
-    potentialFlow.dict(),
-    PhiRefCell,
-    PhiRefValue
-);
-mesh.setFluxRequired(Phi.name());
-
-#include "createMRF.H"
 
 // Add solver-specific interpolations
 {

applications/solvers/basic/potentialFoam/overPotentialFoam/overPotentialFoam.C

@@ -83,6 +83,7 @@ Description
     \heading Options
     \plaintable
         -writep   | write the Euler pressure
+        -writephi | Write the final volumetric flux
         -writePhi | Write the final velocity potential
         -initialiseUBCs | Update the velocity boundaries before solving for Phi
     \endplaintable
@@ -117,6 +118,12 @@ int main(int argc, char *argv[])
         "Initialise U boundary conditions"
     );
 
+    argList::addBoolOption
+    (
+        "writephi",
+        "Write the final volumetric flux field"
+    );
+
     argList::addBoolOption
     (
         "writePhi",
@@ -135,6 +142,8 @@ int main(int argc, char *argv[])
         "Execute functionObjects"
     );
 
+    #include "addRegionOption.H"
+    #include "addCheckCaseOptions.H"
     #include "setRootCaseLists.H"
     #include "createTime.H"
     #include "createNamedDynamicFvMesh.H"
@@ -194,11 +203,16 @@ int main(int argc, char *argv[])
             << endl;
     }
 
-    // Write U and phi
+    // Write U
     U.write();
-    phi.write();
 
-    // Optionally write Phi
+    // Optionally write the volumetric flux, phi
+    if (args.found("writephi"))
+    {
+        phi.write();
+    }
+
+    // Optionally write velocity potential, Phi
     if (args.found("writePhi"))
     {
         Phi.write();