Question

Long thin walled pipe with 175 cm length and Internal diameter of 0.5 mm is closed at one end after purging and pressurized from another end by water. Determine actual pressure at closed end and pressurized end be the same? Assume, No flow will be in the pipe due to static conditions.

Answer 1

Very first thing that we need to take care of is the placement of the pipe.

I) If the pipe is placed vertical then the pressure at bottom(closed end) will be the sum of pressure at upper end and (rho)×g×h.

Here rho represents the density of fluid.

II) If the pipe is placed horizontally then after applying Bernoulli's equation, there is no channg in height so pressure change due to potential term is zero moreover the velocity is also zero in pipe so there is also no change in pressure due to propagation of fluid. Hence it can be concluded that the prrssirp difference between both ends is zero.