Meen 344- HW 4

# Meen 344- HW 4 - gage pressure is 96 kPa The water...

This preview shows pages 1–2. Sign up to view the full content.

MEEN 344: Section 502 HW Problem Set #4 (Due on 10/03/06) 1. A two-dimensional reducing bend has a linear velocity profile at section 1 . The flow is uniform at sections 2 and 3 . The fluid is incompressible and the flow is steady. Find the magnitude and direction of the uniform velocity at section 3 . 2. Consider incompressible steady flow of standard air in a boundary layer on the length of porous surface shown. Assume the boundary layer at the downstream end of the surface has an approximately parabolic velocity profile, 2 ) / ( ) / ( 2 / δ y y U u = . Uniform suction is applied along the porous surface, as shown. Calculate the volume flow rate across surface cd , through the porous suction surface, and across surface bc . 3. Water is flowing steadily through the 180 o elbow shown. At the inlet to the elbow the

This preview has intentionally blurred sections. Sign up to view the full version.

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

Unformatted text preview: gage pressure is 96 kPa. The water discharges to atmospheric pressure. Assume properties are uniform over the inlet and outlet areas: A 1 = 2500 mm 2 , A 2 = 550 mm 2 , and V 1 = 4 m/s. Find the horizontal component of force required to hold the elbow in place 4. A rocket sled accelerates from rest on a level track with negligible air and rolling resistances. The initial mass of the sled is M o = 500 kg. The rocket initially contains 150 kg of fuel. The rocket motor burns fuel at constant rate m ± = 15 kg/s. Exhaust gases leave the rocket nozzle uniformly and axially at V e = 2500 m/s relative to the nozzle, and the pressure is atmospheric. Find the maximum speed reached by the rocket sled. Calculate the maximum acceleration of the sled during the run....
View Full Document

{[ snackBarMessage ]}

### Page1 / 2

Meen 344- HW 4 - gage pressure is 96 kPa The water...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online