Question

You are looking for a cheap way to pump air at a flow rate of 0.0013 m3/s. One option you are exploring is simply rotating a disk with a radius of 10 cm. Find the following: (24 pts) v-1.5 x 10-5 m2/s, ρ-1.2 kg/m3 a) Angular velocity b) Boundary layer thickness c) Maximum radial velocity d) Maximum tangential velocity e) Torque required to rotate the disk, wetted on one side only 9.

Answer 1