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class25_pipe_systems - Alumni Gym 3 Example 4 5 6 7 Example...

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12/6/2007 1 ES330, Section 2 Dr. Douglas Bohl 239 Camp x6683, [email protected] www.clarkson.edu/~dbohl/es330 Trailing vortices and downwash phenomenon of an aircraft in flight are seen clearly in this figure. In this situation, a Cessna Citation VI was flown immediately above the fog bank over Lake Tahoe The air flow from the wing of this agricultural plane is made by a technique that uses colored smoke rising from the ground. The swirl at the wingtip traces the aircraft's wake vortex, which exerts a powerful influence on the flow field behind the plane. Images from www.efluids.com
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2 Outline Flow in Pipes – Minor loss examples – Pumps • Objective Be able to apply size a pump based on system • Announcements – Correction for second exam due Today – Last HW due on Thursday – Final Tuesday December 11, 3:15- 6:15 pm in the
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Unformatted text preview: Alumni Gym 3 Example 4 5 6 7 Example Crude oil at 140 ºF with γ =53.7 lb/ft 3 and μ =8x10-5 lb s/ft 2 is pumped across Alaska through the Alaskan Pipeline. The pipeline is 799 miles long, 4ft in diameter, with a volume flow rate of Q=117 ft 3 /s. Determine the horsepower needed for the pumps that drive this large system. Assume you are pumping from an open reservoir to an open reservoir, with both at sea level. 8 9 Example Air at Standard conditions is to flow through a test section of a wind tunnel at 200 ft/s. The flow is driven by a fan that increases the pressure from P 1 to P 9 . Find the pressure rise needed to overcome the head losses experienced by the fluid as is flows in the tunnel. What power is supplied to the fluid by the fan? You may neglect the pipe friction losses. 10 11 12...
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