It is desired to predict the flow behavior of an oil contained in a large tank $($I$),$ depending on the rotation speed of the impeller, it can be observed that the tank does not have DEFLECTORS and is open to the atmosphere. It is proposed to do this through experiments with a

smaller tank model $($II$)$ in a geometrically similar system. The figure shows the real tank and the model tank.

a$)$ Write the boundary conditions for tanks I and II of the drawing. Must consider non$-$steady state.

b$)$ Write the boundary conditions with the dimensionless variables, for tanks I and II of the drawing. Must consider non$-$steady state.