Physics 432, Physics of uids: Assignment #1
Solutions
1. This is an investigation of the two-dimensional draining bathtub problem described
in lecture, where the tub has uid level h, width 2L and drain width 2D.
(a) Rewrite the order-of-magnitude predicti
JC: Note that a realistic disturbance would be such that the integral of delta p
vanishes. We have a peculiar pressure wave that does not have a negative
part of its cycle.
To produce it, we would need to inject a stream of air that at first accelerates,