Mechanics of Fluids Quiz

(Conservation of mass) For a certain incompressible flow field it is suggested that the velocity components are given by u=2x^2 v=4y^3 w=2z is this a physically possible flow field?

The required number of pi terms is what compared to the number of original variables?

The buoyant force, FB acting on a body submerged in a fluid is a function of the specific weight y of the fluid and the volume V, of the body. By dimensional analysis, find relation between the buoyant force and the specific weight

Water is flowing in a pipe. Which is the correct statement about the effect of a increase in the Reynolds number of the flow:

There is a steady laminar flow of water in a pipe of length L. As the mass flow rate increases, the pressure drop over the length L.

What is the most likely to be the main driving force in pipe flow?

In fluid mechanics, the fluid boundary layer is define as

The pressure and shear stress on the small surface of area A tilted at and angle theta are show below. The area is small enough so that the pressure and shear can be considered constant over the surface.