PS_1 - o to the vertical, as shown, but the mean velocity...

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ChBE421 Problem Set #1 Fall 2009 1. Find the bulk velocity, u b , for laminar flow in a pipe, where u = 3 U 1 (1-r 2 /a 2 ) 2. What is the pressure P A in the figure? The specific gravity of oil is 0.8. 3. What is the pressure difference between points A and B if d 1 = 1.7m, d 2 = 10cm, and d 3 = 0.25m? 4. A partitioned tank as shown contains water and mercury (SG: 13.6). a) What is the gage pressure in the air trapped in the left chamber? b) What pressure would the air on the left need to be pumped to in order to bring the water and mercury free surfaces level?
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5. Water enters a 0.4m square channel as shown below at a velocity of 10m/s. The channel converges to a 0.2m square configuration as shown at the discharge end. The outlet section is cut at 30
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Unformatted text preview: o to the vertical, as shown, but the mean velocity of the discharging water remains horizontal. a) Find the exiting waters average velocity and total rate of flow. b) What if = 0 o ? Find the exiting waters average velocity and total rate of flow. 6. Consider the steady flow in a water pipe joint shown in the diagram below. The areas are A 1 = 0.3 m 2 , A 2 = 0.2 m 2 , A 3 = 0.15 m 2 . Fluid is lost out of hole 4 at a rate of 0.1 m 3 /s. The average fluid speeds at points 1 and 3 are V 1 = 6m/s, V 3 = 9 m/s. Find the average velocity at point 2 (V 2 )....
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PS_1 - o to the vertical, as shown, but the mean velocity...

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