pointMotion derived cellMotion is equivalent

tutorials/incompressible/pimpleDyMFoam/movingCone/0/cellMotionUx

-/*--------------------------------*- C++ -*----------------------------------*\
-| =========                 |                                                 |
-| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
-|  \\    /   O peration     | Version:  1.6                                   |
-|   \\  /    A nd           | Web:      http://www.OpenFOAM.org               |
-|    \\/     M anipulation  |                                                 |
-\*---------------------------------------------------------------------------*/
-FoamFile
-{
-    version     2.0;
-    format      ascii;
-    class       volScalarField;
-    object      motionU;
-}
-// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
-
-dimensions      [0 1 -1 0 0 0 0];
-
-internalField   uniform 0;
-
-boundaryField
-{
-    movingWall
-    {
-        type            fixedValue;
-        value           uniform 1;
-    }
-    farFieldMoving
-    {
-        type            slip;
-    }
-    fixedWall
-    {
-        type            fixedValue;
-        value           uniform 0;
-    }
-    axis
-    {
-        type            symmetryPlane;
-    }
-    left
-    {
-        type            fixedValue;
-        value           uniform 0;
-    }
-    farField
-    {
-        type            slip;
-    }
-    back
-    {
-        type            wedge;
-    }
-    front
-    {
-        type            wedge;
-    }
-}
-
-// ************************************************************************* //

tutorials/incompressible/pimpleDyMFoam/movingCone/0/pointMotionUx

@@ -27,7 +27,33 @@ boundaryField
     }
     farFieldMoving
     {
-        type            slip;
+        //type            slip;
+        type            surfaceSlipDisplacement;
+        geometry
+        {
+            top
+            {
+                type        searchablePlane;
+                planeType   pointAndNormal;
+                basePoint   (0 0.0025 0);
+               normalVector (0 1 0); 
+            }
+        };
+
+        // Find projection with surface:
+        //     fixedNormal : intersections along prespecified direction
+        //     pointNormal : intersections along current pointNormal of patch
+        //     nearest     : nearest point on surface
+        followMode fixedNormal;
+
+        // if fixedNormal : normal
+        projectDirection (0 1 0);
+
+        //- -1 or component to knock out before doing projection
+        wedgePlane      -1;
+
+        //- Points that should remain fixed
+        //frozenPointsZone fixedPointsZone;
     }
     fixedWall
     {
@@ -45,7 +71,28 @@ boundaryField
     }
     farField
     {
-        type            slip;
+        //type            slip;
+        type            surfaceSlipDisplacement;
+        geometry
+        {
+            top
+            {
+                type        searchablePlane;
+                planeType   pointAndNormal;
+                basePoint   (0 0.0025 0);
+               normalVector (0 1 0); 
+            }
+        };
+
+        followMode fixedNormal;
+
+        projectDirection (0 1 0);
+
+        //- -1 or component to knock out before doing projection
+        wedgePlane      -1;
+
+        //- Points that should remain fixed
+        //frozenPointsZone fixedPointsZone;
     }
     back
     {

tutorials/incompressible/pimpleDyMFoam/movingCone/system/controlDict

@@ -17,6 +17,9 @@ FoamFile
 
 application     pimpleDyMFoam;
 
+// For surfaceSlip boundary conditions
+libs            ("libfvMotionSolvers.so");
+
 startFrom       startTime;
 
 startTime       0;