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Unformatted text preview: .35. All parameters are constant except the upper tank
P6.30 A steady push on the piston in Fig. P6.30 causes a flow
depth Z(t). Find an expression for the flow rate Q(t) as a
rate Q 0.15 cm3/s through the needle. The fluid has
function of Z(t). Set up a differential equation, and solve
900 kg/m3 and
0.002 kg/(m s). What force F is refor the time t0 to drain the upper tank completely. Assume
quired to maintain the flow?
quasi-steady laminar flow.
P6.31 SAE 10 oil at 20°C flows in a vertical pipe of diameter
2.5 cm. It is found that the pressure is constant through- P6.36 For straightening and smoothing an airflow in a 50-cm-diameter duct, the duct is packed with a “honeycomb” of
out the fluid. What is the oil flow rate in m3/h? Is the flow
thin straws of length 30 cm and diameter 4 mm, as in Fig.
up or down? | e-Text Main Menu | Textbook Table of Contents | Study Guide 408 Chapter 6 Viscous Flow in Ducts
D SAE 10 oil ρ, µ
Z (t) D = 4 cm 3m 42 cm
d h L Mercury P6.38
H pB = 180 kPa P6.35
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This note was uploaded on 10/27/2009 for the course MAE 101a taught by Professor Sakar during the Spring '08 term at UCSD.
- Spring '08