Results interpolation onto another mesh, or mesh-to-mesh interpolation, allows transferring results obtained on one mesh to a second mesh that is unrelated to the first one except through the geometry. Usually, the second mesh will be more refined than the first one. There is no assumption that the nodes or element numbering correspond, however a reasonable geometric match is required. If the two geometries do not match, the error will be of the order of the geometrical difference. All calculated fields, including velocity, temperature, pressure and species, will be transferred from the first mesh to the second mesh.

Note that the procedure described below is reasonable as long as it is not applied frequently on a given case. For a recurrent and automatic transfer of results onto new meshes, you should consider using adaptive meshing tools as described in Adaptive Meshing.