ENH: add const-ness to pressureImplicitPorosity control

applications/solvers/compressible/rhoPorousSimpleFoam/createFields.H

@@ -65,22 +65,13 @@
     dimensionedScalar initialMass = fvc::domainIntegrate(rho);
 
     thermalPorousZones pZones(mesh);
-    Switch pressureImplicitPorosity(false);
 
+    // nUCorrectors used for pressureImplicitPorosity
     int nUCorr = 0;
-    if (pZones.size())
-    {
-        // nUCorrectors for pressureImplicitPorosity
-        if (mesh.solutionDict().subDict("SIMPLE").found("nUCorrectors"))
-        {
-            nUCorr = readInt
-            (
-                mesh.solutionDict().subDict("SIMPLE").lookup("nUCorrectors")
-            );
-        }
+    const bool pressureImplicitPorosity =
+    (
+        pZones.size()
+     && mesh.solutionDict().subDict("SIMPLE").readIfPresent("nUCorrectors", nUCorr)
+     && (nUCorr > 0)
+    );
 
-        if (nUCorr > 0)
-        {
-            pressureImplicitPorosity = true;
-        }
-    }

applications/solvers/incompressible/porousSimpleFoam/createFields.H

@@ -43,22 +43,13 @@
 
 
     porousZones pZones(mesh);
-    Switch pressureImplicitPorosity(false);
 
+    // nUCorrectors used for pressureImplicitPorosity
     int nUCorr = 0;
-    if (pZones.size())
-    {
-        // nUCorrectors for pressureImplicitPorosity
-        if (mesh.solutionDict().subDict("SIMPLE").found("nUCorrectors"))
-        {
-            nUCorr = readInt
-            (
-                mesh.solutionDict().subDict("SIMPLE").lookup("nUCorrectors")
-            );
-        }
+    const bool pressureImplicitPorosity =
+    (
+        pZones.size()
+     && mesh.solutionDict().subDict("SIMPLE").readIfPresent("nUCorrectors", nUCorr)
+     && (nUCorr > 0)
+    );
 
-        if (nUCorr > 0)
-        {
-            pressureImplicitPorosity = true;
-        }
-    }