Question 2
Air is flowing through a venturi meter whose diameter is 2.6 in at the entrance part (location 1) and 1.8 in at the throat (location 2) in Figure 2. The gage pressure is measured to be 13 psia at the entrance and 12 psia at the throat.
a) Neglecting frictional effects, show that the volume flow rate can be expressed as
$V = A_2 \sqrt{\frac{2(P_1 - P_2)}{\rho(1 - A_2^2/A_1^2)}}$ Equation 1
b) Determine the flow rate of air. Take the air density to be 0.075 lbm/ft³