Stationary Study
A stationary analysis solves for stationary displacements or a steady-state condition. All loads and constraints are constant. For a stationary analysis, use a Stationary study type (). For all pure acoustic and vibration problems, this type of analysis yields the zero solution as, by definition, these represent and describe propagating varying fields — either time dependent or time harmonic in the frequency domain.
Stationary in the COMSOL Multiphysics Reference Manual