so, the equation, a1v1=a2v2 is applicable unless it is compressible flow? the last i remembered it is only for steady flow, and non of the books has a worked example for time-dependent inlet flow.
given an incompressible steady flow over a converging duct, the outlet velocity can be found just by using mass continuity equation, v1A1=v2A2.
However given a time dependent inlet velocity ie. oscillating velocity, how do i get the outlet velocity? assume the flow is incompressible and...