Specifying Mesh Deformation Boundary Conditions

By selecting the Mesh Deformation model in physics continuum, you activate the Mesh Deformation solver, in which the morpher is used to update and deform the mesh. Before deforming the mesh, you first define the Morpher Specification in the boundary conditions .

For more details on how the morpher works, see Working with Morphing.

When performing a shape optimization, at each boundary of the computational domain you define the Morpher Specification of how they are morphed. For the Mesh Deformation solver, you can select the following Morpher Specification for the boundaries:
  • Fixed
  • Floating
  • Displacement

For a simulation of an airfoil within a wind tunnel, only the airfoil is subject to adjoint shape optimization with the vertices at the boundary being morphed. The surrounding wind tunnel boundaries remain fixed. So you define the airfoil as a Displacement boundary and wind tunnel as Fixed. For the boundaries with Displacement as morpher specification , you input a computed displacement based on the adjoint solution to achieve a shape optimization later on.

To specify mesh deformation boundary conditions:

  1. Select the Regions > [Region] > Boundaries > [Boundary] > Physics Conditions > Morpher node.

  2. In the Morpher - Properties window, refer to Mesh Deformation Reference to set the appropriate properties.