Oil (SG = 0.84) is flowing in a pipe under the conditions shown in Figure. Find the pressure at point 2 Point 1D, -6P.- 65 psiQ- 2.08 efs10.70 ftQ = 2.08 cfsPoint 2D -9 in4.00 ftRelerence datum

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Answered: Oil (SG = 0.84) is flowing in a pipe…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Water flows inside a solid cylindrical pipe, which narrows as it goes up to a height h (see diagram below). The lower horizontal section has circular cross-sectional diameter d, whereas the upper horizontal section has diameter d/2. Let us denote A to be a point at the lower horizontal section and B to be a point at the upper horizontal section. The flow speed at A and B is uд and u, respectively. The pressure at A and B is PA and PB, respectively. РА UA Oom Ja d d/21 1 UB h (a) Assuming water to be incompressible, show that the flow speed at B is four times the flow speed at A. (b) Use Bernoulli's equation to find the drop in the water pressure from A to B. Express the result in terms of h, uд, the density of water p, and the acceleration of gravity g. (c) Above certain critical height h, vapour bubbles start to appear at the top horizontal section, which hinders water flow through the pipe. Explain why this happens.
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A3
FLUID MECHANICS A specific structure used inclined piping design in order to distribute water. In order to quantify the pressure drop, a mercury manometer is used as shown in the figure. Calculate the pressure drop from point 1 to point 2.
For the tank in the figure, calculate the volumetric flow of water, which comes out through a pipe, the tank is sealed and there is a pressure of 140 KPa above the water, the depth is h1=2.5M
1.Find the diameter of a pipe of length 3000 m when the rate of flow of water through the pipe is 300 litres/s and the head lost due to friction is 5 m. Take the value of C = 50 in Chezy’s formula.
Problem 2 The apparatus sketched in the figure below serves as a viscometer i.e. it can be used to measure the viscosity of a liquid. In the drawing, D is a large reservoir containing a viscous liquid A and E is a cylindrical tube of radius R, open at both ends, surrounding and coaxial with B, which is a cylindrical "bob" of radius êR that is dragged up through the fluid by a frictionless pulley system (C) utilizing a weight W. Determine a design equation that relates the viscosity of the liquid to the geometry of the system and the weight W. Hint: you can assume that the length of the cylindrical tube is sufficiently long for the flow to reach steady state. W E D B
A 200 m long pipe slopes down at 1 in 100 and tapers from 0-25 m diameter to 0-15 m diameter the pressure at th the lower end. If the pipe carries 100 litres of oil of specific gravity 0-85, find lower end. The upper end gauge reads 50 kPa. [Ans. 54-9 kP
2. Oil with a S.G. pf 0.82 is flowing in a pipe under the condition below (see figure). If the total head loss from point 1 to point 2 is 3 ft, find the pressure at point 2 in PSI. Note: cfs = cubic ft per sec Point 1 D₁ - 6 km P₁-65 pal 0 Q-2.08 efs Q-2.08 efs Point 2 D₂ - 9 in 10.70 ft 4.00 ft Reference datum
A 200 mm long pipe slopes down at 1 in 100 and tapers from 0.25m diameter to 0.15 diameter at the lower end. If the pipe carries 100 litres of oil of specific gravity 0.85 find the pressure at the lower end. The upper end gauge reads 50 KPa.

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