CFD Online Discussion Forums - Object registry problem

Hi,

I want to define a boundary condition for a subset mesh motion.

I collect the boundary points by:

Code:

        pointVectorField& PointDisplacement =  const_cast<pointVectorField&>

            (

            subset1Mesh_.subMesh().objectRegistry::lookupObject<pointVectorField>

            (

            "pointDisplacement"

            )

            );



            pointField & subset1Boundary   =  refCast<pointField>(PointDisplacement.boundaryField()[patchIndex]);

where subset1Mesh is the subset-Mesh region that I want to move.

when I run the case, the error shows that:

Code:

    --> FOAM FATAL ERROR: 

      

          request for pointVectorField pointDisplacement from object Registry motionSubset failed

          available objects of type pointVectorField are

      

      0

      (

      )

      

          From function objectRegistry::lookupObject<Type>(const       word&) const

          in file       /home/hchen/foam/foam-extend-3.1/src/foam/lnInclude/objectRegistryTemplates.C       at line 139.

      

      FOAM aborting

I suspect that is due to something like the hierarchy of the object registry.It can not find the file pointDisplacement in the sub-directory motionSubset under the main directory 0.There might be something wrong withsubset1Mesh_.subMesh()....

Anybody could help me? Thanks very much!

Best regards
Hao