TUT: overset: demo some motion. See #2711.

src/overset/cellCellStencil/cellCellStencil/cellCellStencil.C

@@ -110,6 +110,33 @@ Foam::word Foam::cellCellStencil::baseName(const word& name)
 }
 
 
+void Foam::cellCellStencil::suppressMotionFields()
+{
+    // Protect local fields from interpolation
+    nonInterpolatedFields_.insert("cellInterpolationWeight");
+    nonInterpolatedFields_.insert("cellTypes");
+    nonInterpolatedFields_.insert("maxMagWeight");
+
+    // For convenience also suppress frequently used displacement field
+    {
+        nonInterpolatedFields_.insert("cellDisplacement");
+        nonInterpolatedFields_.insert("grad(cellDisplacement)");
+        const word w("snGradCorr(cellDisplacement)");
+        const word d("((viscosity*faceDiffusivity)*magSf)");
+        nonInterpolatedFields_.insert("surfaceIntegrate(("+d+"*"+w+"))");
+    }
+
+    // For convenience also suppress frequently used displacement field
+    {
+        nonInterpolatedFields_.insert("cellMotionU");
+        nonInterpolatedFields_.insert("grad(cellMotionU)");
+        const word w("snGradCorr(cellMotionU)");
+        const word d("((viscosity*faceDiffusivity)*magSf)");
+        nonInterpolatedFields_.insert("surfaceIntegrate(("+d+"*"+w+"))");
+    }
+}
+
+
 const Foam::labelIOList& Foam::cellCellStencil::zoneID(const fvMesh& mesh)
 {
     labelIOList* zoneIDPtr = mesh.getObjectPtr<labelIOList>("zoneID");

src/overset/cellCellStencil/cellCellStencil/cellCellStencil.H

@@ -5,7 +5,7 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2017-2022 OpenCFD Ltd.
+    Copyright (C) 2017-2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -117,6 +117,10 @@ protected:
         //- Helper: strip off trailing _0
         static word baseName(const word& name);
 
+        //- Helper: populate nonInterpolatedFields_ with motion solver
+        //  fields
+        void suppressMotionFields();
+
 
 private:
 

src/overset/cellCellStencil/cellVolumeWeight/cellVolumeWeightCellCellStencil.C

@@ -541,16 +541,8 @@ Foam::cellCellStencils::cellVolumeWeight::cellVolumeWeight
         dict.getOrDefault("allowInterpolatedDonors", true)
     )
 {
-    // Protect local fields from interpolation
+    // Add motion-solver fields to non-interpolated fields
-    nonInterpolatedFields_.insert("cellTypes");
+    suppressMotionFields();
-    nonInterpolatedFields_.insert("cellInterpolationWeight");
-
-    // For convenience also suppress frequently used displacement field
-    nonInterpolatedFields_.insert("cellDisplacement");
-    nonInterpolatedFields_.insert("grad(cellDisplacement)");
-    const word w("snGradCorr(cellDisplacement)");
-    const word d("((viscosity*faceDiffusivity)*magSf)");
-    nonInterpolatedFields_.insert("surfaceIntegrate(("+d+"*"+w+"))");
 
     // Read zoneID
     this->zoneID();

src/overset/cellCellStencil/inverseDistance/inverseDistanceCellCellStencil.C

@@ -5,7 +5,7 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2017-2022 OpenCFD Ltd.
+    Copyright (C) 2017-2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -1739,17 +1739,8 @@ Foam::cellCellStencils::inverseDistance::inverseDistance
         fvPatchFieldBase::zeroGradientType()
     )
 {
-    // Protect local fields from interpolation
+    // Add motion-solver fields to non-interpolated fields
-    nonInterpolatedFields_.insert("cellInterpolationWeight");
+    suppressMotionFields();
-    nonInterpolatedFields_.insert("cellTypes");
-    nonInterpolatedFields_.insert("maxMagWeight");
-
-    // For convenience also suppress frequently used displacement field
-    nonInterpolatedFields_.insert("cellDisplacement");
-    nonInterpolatedFields_.insert("grad(cellDisplacement)");
-    const word w("snGradCorr(cellDisplacement)");
-    const word d("((viscosity*faceDiffusivity)*magSf)");
-    nonInterpolatedFields_.insert("surfaceIntegrate(("+d+"*"+w+"))");
 
     // Read zoneID
     this->zoneID();

tutorials/incompressible/overPimpleDyMFoam/cylinder/README.txt

@@ -1,8 +1,11 @@
-Transient, steady mesh
+Transient, moving mesh
------------------------
+----------------------
 
 cylinderMesh/
     For generating (2D) mesh cylinder mesh
 
 cylinderAndBackground/
     BlockMesh for background and running
+
+    0.orig/pointDisplacement set up to use table driven motion. Set bc of
+    walls to e.g. uniformValue (0 0 0) to have steady mesh.

tutorials/incompressible/overPimpleDyMFoam/cylinder/cylinderAndBackground/0.orig/cellDisplacement

@@ -0,0 +1,47 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2306                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       volVectorField;
+    object      cellDisplacement;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 1 0 0 0 0 0];
+
+internalField   uniform (0 0 0);
+
+boundaryField
+{
+    #includeEtc "caseDicts/setConstraintTypes"
+
+    overset
+    {
+        patchType       overset;
+        type            zeroGradient;
+    }
+
+    // Cylinder wall
+    walls
+    {
+        type            cellMotion;
+        value           $internalField;
+    }
+
+    // Outside patches
+    ".*"
+    {
+        type            cellMotion;
+        value           $internalField;
+    }
+}
+
+
+// ************************************************************************* //

tutorials/incompressible/overPimpleDyMFoam/cylinder/cylinderAndBackground/0.orig/pointDisplacement

@@ -20,18 +20,29 @@ internalField   uniform (0 0 0);
 
 boundaryField
 {
+    #includeEtc "caseDicts/setConstraintTypes"
+
     overset
     {
         patchType       overset;
         type            zeroGradient;
     }
 
+    // Cylinder wall
     walls
     {
         type            uniformFixedValue;
-        uniformValue    (0 0 0);
+        uniformValue    table
+        (
+            (0      (0 0  0))
+            (0.5    (0 0  1))
+            (1      (0 0  0))
+            (1.5    (0 0 -1))
+            (2      (0 0  0))
+        );
     }
 
+    // Outside patches
     ".*"
     {
         type            uniformFixedValue;