You can add moving mesh features to any COMSOL Multiphysics model. They are available from the Moving Mesh submenu when right-clicking the Definitions node under a Component and from the Definitions toolbar. The moving mesh features control the spatial frame and therefore potentially apply to all physics in the model. They can be used to study both stationary states and time-dependent deformations where the geometry changes its shape due to the dynamics of the problem. For example, Deforming Domain features can be used for fluid domain deformations in fluid-structure interaction (FSI) or electrostatic domain deformations (Electromechanics) in MEMS. Other features can specify that parts of the model rotate or otherwise deform in some way..