Cases of Transformation of the Equations of Motion of an Incompressible Viscous Fluid into the Euler Equations

In chemical technology, an important place is occupied by studies of the processes of mass and heat transfer in moving media. Obviously, in order to study these processes, it is necessary to know how the media move. Determining the velocity field of liquids and gases is a purely kinematic task. Can it be solved without resorting to the equations of motion, limited only by the continuity equation?