In this work we develop a physical model which describes the behavior of an unsteady flow measured with a gravimetric set up. The model is based on equation for the physical shape of the interfaces between different fluids in the beaker (air-oil and oil-water) and on models of contact angles between these interfaces and the tube and beaker wall. In these models a dynamical contact angle is considered which can change with motion of the interfaces and which depends on velocity of the interfaces. The full report can be downloaded here.
Numerical simulations of pulsating flow