Is the Eulerian View Valid for Unsteady Flows?

[mech-eng]

Is Eulerian view valid when the flow is unsteady? I think Eulerian view is valid only for steady flows because the points in the flow domain should be with constant velocities.

Thank you.

 

[boneh3ad]

Neither the Eulerian nor Lagrangian descriptions of a flow field care whether the flow is steady or not. Both are valid for unsteady flows.