Chapter 3.

# Chapter 3. - Print Assignment New Assignment 3:fa|se 1...

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Unformatted text preview: 10/14/2016 Print Assignment: New Assignment 3 ::fa|se 1. Concept Question 3.04.5 A short pipe with a nozzle pointing straight up is attached to the tank of water as shown below. The flow is frictionless. The figure that best describes the flow of water from the nozzle is DA C} B DC 2. Concept Question 3.01.1 In low speed flow, the following device is called a diffuser: Flow dire ction —I' The fluid velocity: increases in the direction of flow. decreases in the direction of flow. stays the same in the direction of flow. GOOD None of the above. Ieypl us.com/edugen/shared/assignm ent/test/agprint.uni?num berQuest=true&titleType=false&printType=withoutAnswer&alg_version=&pr. . . 1/5 10/14/2016 Print Assignment: New Assignment 3 ::fa|se 3. Concept Question 3.02.1 Consider steady flow along a streamline. If the flow satisfies the conditions necessary for the Bernoulli equation, which of the following has a constant value along the streamline? Static pressure Dynamic pressure Stagnation pressure GOOD Total pressure 4. Chapter 3, Problem 052 Water flows through the pipe contraction shown in Fig. P3.52. For the given 0.38-m difference in the manometer level, determine the flowrate Q. Figure P3.52 Q = m3/s Signiﬁcant digits are disabled; the tolerance is +/-2% 5. Chapter 3, Problem 065 Water flows steadily from a large, closed tank as shown in Fig. P3.65. The deflection in the mercury manometer is 1.2 in. and viscous effects are negligible. (a) Determine the volume ﬂowrate. (b) Determine the air pressure in the space above the surface of the water in the tank. Ieypl us.com/edugen/shared/assignm ent/test/agprint.uni?num berQuest=true&titleType=false&printType=withoutAnswer&alg_version=&pr. . . 2/5 10/14/2016 Print Assignment: New Assignment 3 ::fa|se l-ft diameter ' 3—il'l_. diameter Menu}- Figure P3.65 *1 (a) Q = ft3/s *2 . ('3) Pair = psn *1 *2 - signiﬁcant digits are disabled; the tolerance is +/-2% - signiﬁcant digits are disabled; the tolerance is +/-2% 6. Chapter 3, Problem 103 (GO Multipart) Part 1 Water flows through the horizontal branching pipe shown in Fig. P3.103 at a rate of 9 ft3/s. If viscous effects are negligible, determine (a) the water speed at section (2), (b) the pressure at section (3), and (c) the flowrate at section (4). /A2 = :10? {1'2 P2 = 5.635" {21 213:0.2ﬂ2 Vaz1ﬂftlll3 _F- “- 111:1??? 91:9 IS p1:1ﬂpﬂl {‘1'} x Figure P3.103 First choose an equation to model the flow. https:l/edugen.wi leypl us.com/edugenlsharedlassignm enlltestlagprint.uni?num berQuest=true&titleType=false&printType=withoutAnswer&alg_version=&pr. . . 3/5 10/14/2016 Print Assignment: New Assignment 3 ::fa|se Are the assumptions and conditions for the use of Bernoulli's Equation satisfied: (a) Can one or more streamlines be identiﬁed? (b) Is the ﬂow without significant viscous effects? (c) Is the ﬂow steady? (d) Is the ﬂow incompressible? (e) Is there any mechanical work done on the fluid? The elevation differences between points (1), (2), and (3) equal zero Part 2 Calculate the water speed in ft/s at point (cross-section) (2). V2 = *1 ft/s Signiﬁcant digits are disabled; the tolerance is +/-2% Part 3 Calculate the pressure at (3) in psi. P3 = *1 PSi Signiﬁcant digits are disabled; the tolerance is +/-2% Part 4 Calculate the flow rate at (4) in ft3/s. Q4 = *1 ft3/s Signiﬁcant digits are disabled; the tolerance is +/-2% 7. Chapter 3, Problem 083 Water flows from a large tank as shown in Fig. P3.83. Atmospheric pressure is 14.5 psia, and the vapor pressure is 1 psia. (a) If viscous effects are neglected, at what height, h, will cavitation begin? (b) To avoid cavitation, should the value of 01 be increased or decreased? (c) To avoid cavitation, should the value of Dz be increased or decreased? Ieypl us.com/edugenlshared/assignm entltestlagprint.uni?num berQuest=true&titleType=false&printType=withoutAnswer&alg_version=&pr. . . 4/5 10/14/2016 Print Assignment: New Assignment 3 ::fa|se Figure P3.83 (a)h=:*1ft (b) The value of 01 should be (c) The value of D2 should be Signiﬁcant digits are disabled; the tolerance is +/-2% 8. Chapter 3, Problem 100 Water flows through a horizontal branching pipe as shown in Fig. P3.100. Determine the pressure at section (3). v3 1: = {1.0Tm2 [3} T V: A: = 0.02m? ,9" m V; = 3.9mls P: = 405kPﬂ At = D. 1 Din: Figure P3.100 Signiﬁcant digits are disabled; the tolerance is +/-2% https:l/edugen.wi Ieypl us.com/edugenlsharedlassignm entltestlagprint.uni?num berQuest=true&titleType=false&printType=withoutAnswer&a|g_version=&pr. . . 5/5 ...
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• Fall '16
• Chen-wei shin

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