‫دانشكده مهندسي شيمي‬
II ‫مكانيك سياالت‬
1- What is the pressure at a point 10m below the free surface in a fluid that
has a variable density in kg/m3 given by ρ=450+ah, in which a=12 kg/m4
and h is the distance in meters measured from the free surface?
2- In the inclined differential manometer of following figure, initially the
pressure differential between A& B, which contain a fluid with SG=1.1, is
zero. For a pressure differential of 0.1 psi, it is desired that the manometer
give a differential reading of 12 in along the inclined tube. Determine the
required angle of inclination, θ.
SG=1.6
3- The inclined manometer reads zero when A and B are the same pressure.
The reservoir diameter is 2 in, and that of the inclined tube ¼ in. For θ=30º,
gage fluid sp gr 0.832, find PA-PB in lb/in2 as a function of gage reading R in
feet.
4- In the micro-manometer, the pressure difference is wanted, when air at
20 ◦C is in the system, S2=1.0, S3=1.10, a/A=0.01, h=5mm and the barometer
reads 760 mmHg.
5- A 2.5 in-diameter nozzle meter is installed in a 3.8 in-diameter pipe that
carries water at 160ºF. If the inverted air- water U-tube manometer used to
measure the pressure difference across the meter indicates a reading of 3.1 ft,
determine the flowrate.
6- Water flows over a triangular weir, as is shown in figure. Determine the
dependence of the flow rate on the depth H. If depth of water is increased to
3 times of H, estimate the flow rate of water.
H
θ