Chapt06

# P6140 kerosine at 20c flows at 18 m3h in a 5 cm

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: time for the fluid level h(t) to drop from 2.0 to 1.6 m. 2 D = 6 cm 2m P6.147 proximated by thin-plate orifices. Hint: A momentum control volume may be very useful. P6.148 A smooth pipe containing ethanol at 20°C flows at 7 m3/h through a Bernoulli obstruction, as in Fig. P6.148. Three piezometer tubes are installed, as shown. If the obstruction is a thin-plate orifice, estimate the piezometer levels (a) h2 and (b) h3. h3 h2 h 1= 1 m 5m h (0) = 2 m d = 3 cm 1m P6.145 P6.148 h (t ) Q (t ) | v v P6.146 A pipe connecting two reservoirs, as in Fig. P6.146, contains a thin-plate orifice. For water flow at 20°C, estimate (a) the volume flow through the pipe and (b) the pressure drop across the orifice plate. P6.147 Air flows through a 6-cm-diameter smooth pipe which has a 2-m-long perforated section containing 500 holes (diameter 1 mm), as in Fig. P6.147. Pressure outside the pipe is sea-level standard air. If p1 105 kPa and Q1 110 m3/h, estimate p2 and Q2, assuming that the holes are ap- | e-Text Main Menu | D = 5 cm P6.149 Repeat Prob. 6.148 if t...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online