interFoam, interMixingFoam, interPhaseChangeFoam: construct rho with calculated BCs

Avoids problems with inherited complex BCs for which the controlling
fields and parameters are not initialized.

applications/solvers/multiphase/interFoam/createFields.H

@@ -49,8 +49,7 @@ volScalarField rho
         mesh,
         IOobject::READ_IF_PRESENT
     ),
-    alpha1*rho1 + alpha2*rho2,
-    alpha1.boundaryField().types()
+    alpha1*rho1 + alpha2*rho2
 );
 rho.oldTime();
 

applications/solvers/multiphase/interFoam/interMixingFoam/createFields.H

@@ -50,8 +50,7 @@ volScalarField rho
         mesh,
         IOobject::READ_IF_PRESENT
     ),
-    alpha1*rho1 + alpha2*rho2 + alpha3*rho3,
-    alpha1.boundaryField().types()
+    alpha1*rho1 + alpha2*rho2 + alpha3*rho3
 );
 rho.oldTime();
 

applications/solvers/multiphase/interPhaseChangeFoam/createFields.H

@@ -51,8 +51,7 @@ volScalarField rho
         mesh,
         IOobject::READ_IF_PRESENT
     ),
-    alpha1*rho1 + alpha2*rho2,
-    alpha1.boundaryField().types()
+    alpha1*rho1 + alpha2*rho2
 );
 rho.oldTime();