Exam2_2010 - 57:020 Mechanics of Fluids and Transport Fall...

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Unformatted text preview: 57:020 Mechanics of Fluids and Transport Fall 2010 EXAM2 November 8, 2010 1. A jet of alcohol ( ρ = 788.42 kg/m 3 ) strikes the vertical plate in Fig. 1. The (absolute) pressure p 1 = 760 kPa at section 1. Find (a) the alcohol jet velocity V 2 at section 2 and (b) the force F re- quired to hold the plate stationary. For part (a), assume there are no losses in the nozzle flow. 2. Water flows through a vertical pipe, as is indicated in Fig.2. The vertical distance H = 50 cm be- tween the two points marked with dots at the pipe and the mercury ( SG = 13.6) manometer height h = 5 cm due to the pressure difference between the two points. (a) What is the head loss h L be- tween the two points? (b) Is the flow up or down in the pipe? Explain. Fig. 1 Fig. 2 3. Consider a steady, incompressible, parallel, laminar flow of a viscous fluid falling between two infinite, vertical walls as shown in Fig. 3. The dis- tance between the walls is h , and gravity acts in the negative z-direction (...
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