BUG: solutionControl solver objects can return false positives in residualControl

Reported by Mark Olesen

src/finiteVolume/cfdTools/general/solutionControl/pimpleControl/pimpleControl.C

@@ -59,36 +59,37 @@ bool Foam::pimpleControl::criteriaSatisfied()
     bool firstIter = corr_ == 1;
 
     bool achieved = true;
-    const dictionary& solverDict = mesh_.solverPerformanceDict();
+    bool checked = false;    // safety that some checks were indeed performed
 
+    const dictionary& solverDict = mesh_.solverPerformanceDict();
     forAllConstIter(dictionary, solverDict, iter)
     {
         const word& variableName = iter().keyword();
-        label fieldI = applyToField(variableName);
+        const label fieldI = applyToField(variableName);
         if (fieldI != -1)
         {
             const List<lduMatrix::solverPerformance> sp(iter().stream());
             const scalar residual = sp.last().initialResidual();
 
+            checked = true;
+
             if (firstIter)
             {
                 residualControl_[fieldI].initialResidual =
                     sp.first().initialResidual();
             }
 
-            bool absCheck = residual < residualControl_[fieldI].absTol;
-
+            const bool absCheck = residual < residualControl_[fieldI].absTol;
             bool relCheck = false;
 
             scalar relative = 0.0;
             if (!firstIter)
             {
-                scalar iniRes =
+                const scalar iniRes =
                     residualControl_[fieldI].initialResidual
                   + ROOTVSMALL;
 
                 relative = residual/iniRes;
-
                 relCheck = relative < residualControl_[fieldI].relTol;
             }
 
@@ -110,7 +111,7 @@ bool Foam::pimpleControl::criteriaSatisfied()
         }
     }
 
-    return achieved;
+    return checked && achieved;
 }
 
 
@@ -129,7 +130,13 @@ Foam::pimpleControl::pimpleControl(fvMesh& mesh)
     if (nOuterCorr_ > 1)
     {
         Info<< nl;
-        if (!residualControl_.empty())
+        if (residualControl_.empty())
+        {
+            Info<< algorithmName_ << ": no residual control data found. "
+                << "Calculations will employ " << nOuterCorr_
+                << " corrector loops" << nl << endl;
+        }
+        else
         {
             Info<< algorithmName_ << ": max iterations = " << nOuterCorr_
                 << endl;
@@ -142,12 +149,6 @@ Foam::pimpleControl::pimpleControl(fvMesh& mesh)
             }
             Info<< endl;
         }
-        else
-        {
-            Info<< algorithmName_ << ": no residual control data found. " << nl
-                << "Calculations will employ " << nOuterCorr_
-                << " corrector loops" << nl << endl;
-        }
     }
     else
     {

src/finiteVolume/cfdTools/general/solutionControl/pimpleControl/pimpleControl.H

@@ -69,10 +69,10 @@ protected:
 
     // Protected Member Functions
 
-        //- Read constrols from fvSolution dictionary
+        //- Read controls from fvSolution dictionary
         virtual void read();
 
-        //- Return true if all convergence checks are satified
+        //- Return true if all convergence checks are satisfied
         virtual bool criteriaSatisfied();
 
         //- Disallow default bitwise copy construct

src/finiteVolume/cfdTools/general/solutionControl/simpleControl/simpleControl.C

@@ -50,17 +50,20 @@ bool Foam::simpleControl::criteriaSatisfied()
     }
 
     bool achieved = true;
-    const dictionary& solverDict = mesh_.solverPerformanceDict();
+    bool checked = false;    // safety that some checks were indeed performed
 
+    const dictionary& solverDict = mesh_.solverPerformanceDict();
     forAllConstIter(dictionary, solverDict, iter)
     {
         const word& variableName = iter().keyword();
-        label fieldI = applyToField(variableName);
+        const label fieldI = applyToField(variableName);
         if (fieldI != -1)
         {
             const List<lduMatrix::solverPerformance> sp(iter().stream());
             const scalar residual = sp.first().initialResidual();
 
+            checked = true;
+
             bool absCheck = residual < residualControl_[fieldI].absTol;
             achieved = achieved && absCheck;
 
@@ -75,7 +78,7 @@ bool Foam::simpleControl::criteriaSatisfied()
         }
     }
 
-    return achieved;
+    return checked && achieved;
 }
 
 
@@ -90,7 +93,13 @@ Foam::simpleControl::simpleControl(fvMesh& mesh)
 
     Info<< nl;
 
-    if (residualControl_.size() > 0)
+    if (residualControl_.empty())
+    {
+        Info<< algorithmName_ << ": no convergence criteria found. "
+            << "Calculations will run for " << mesh_.time().endTime().value()
+            << " steps." << nl << endl;
+    }
+    else
     {
         Info<< algorithmName_ << ": convergence criteria" << nl;
         forAll(residualControl_, i)
@@ -101,12 +110,6 @@ Foam::simpleControl::simpleControl(fvMesh& mesh)
         }
         Info<< endl;
     }
-    else
-    {
-        Info<< algorithmName_ << ": no convergence criteria found. "
-            << "Calculations will run for " << mesh_.time().endTime().value()
-            << " steps." << nl << endl;
-    }
 }
 
 

src/finiteVolume/cfdTools/general/solutionControl/simpleControl/simpleControl.H

@@ -59,10 +59,10 @@ protected:
 
     // Protected Member Functions
 
-        //- Read constrols from fvSolution dictionary
+        //- Read controls from fvSolution dictionary
         void read();
 
-        //- Return true if all convergence checks are satified
+        //- Return true if all convergence checks are satisfied
         bool criteriaSatisfied();
 
         //- Disallow default bitwise copy construct

src/finiteVolume/cfdTools/general/solutionControl/solutionControl/solutionControl.H

@@ -40,7 +40,7 @@ namespace Foam
 {
 
 /*---------------------------------------------------------------------------*\
-                  Class solutionControl Declaration
+                       Class solutionControl Declaration
 \*---------------------------------------------------------------------------*/
 
 class solutionControl
@@ -78,19 +78,19 @@ protected:
             //- Flag to indicate to solve for momentum
             bool momentumPredictor_;
 
-            //- Flag to indictae to solve using transonic algorithm
+            //- Flag to indicate to solve using transonic algorithm
             bool transonic_;
 
 
     // Protected Member Functions
 
-        //- Read constrols from fvSolution dictionary
+        //- Read controls from fvSolution dictionary
         virtual void read(const bool absTolOnly);
 
         //- Return index of field in residualControl_ if present
         virtual label applyToField(const word& fieldName) const;
 
-        //- Return true if all convergence checks are satified
+        //- Return true if all convergence checks are satisfied
         virtual bool criteriaSatisfied() = 0;
 
         //- Store previous iteration fields
@@ -142,7 +142,7 @@ public:
             //- Flag to indicate to solve for momentum
             inline bool momentumPredictor() const;
 
-            //- Flag to indictae to solve using transonic algorithm
+            //- Flag to indicate to solve using transonic algorithm
             inline bool transonic() const;
 };