Note: Please consider Flow velocity in the tank is zero, and the fluid is incompressible.
Case 1: This is simple to understand. In this, I can calculate the flow velocity by applying Bernoulli's equation as the pressure difference is completely converted to kinetic energy.
i)So am I correct in understanding that the presence or absence of the pipe has no effect on the flow rate?
ii) Is the pressure at every point of the pipe the same as atmospheric pressure?
iii) Will the flow rate be the same as in case 1 or will the addition of the diverging section cause the flow rate to increase.
iv)Does the inclusion of the diverging section cause the flow to expand and so increase the static pressure (to atmospheric pressure) and if this is true will the static pressure before the expansion be less than atmospheric pressure?