Q1. An oil of relative density 0.92 and dynamic viscosity 0.082 Pa.sec flows in an 80mm diameter pipe. In a distance of 20 m the flow has a head loss of 2 m. Calculate (i)the mean velocity. (ii) discharge, (iii) velocity and shear stress at a radical distance of38 mm from the pipe axis and (iv) boundary shear stress.

remember velocity variation is not linear. It varies from 0 to umax w.r.t r if you have any doubts…

Answered: Q1. An oil of relative density 0.92 and…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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O -0.13 Darcy Experiment A set-up of Darcy Experiment involves measuring the pressure head at two piezometers separated a distance, L. Given the set-up shown, determine the hydraulic gradient if the hydraulic head at (1) is 24 inches, hydraulic head at (2) is 11 inches, and the travel distance is 100 inches. O 7.7 O -7.7 (1) O 0.13 e - - - -
Problem 6: EGL and HGL (II) Part A Why is the energy gradient (i.e., the slope of the EGL=EL) larger in pipe 2 than in pipes 1 or 3? (<10 words) Part B Why are the EGL and HGL not parallel in this figure? (<10 words) H V² 28 HGL 2 EL Hydraulic grade line, slope = S, Ax - Energy line, slope = Sy Bed ylope Datum h₂ - Az 2 4 X
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Design a rapid mix tank for water at 50° F flowing at Q = 4.0 MGD for a typical process train ina drinking water treatment plant. Use a square tank with a depth 1.25 times the width, a designvelocity gradient G = 900 sec−1, and a hydraulic detention time τ = 30 seconds. Specificallydetermine:a. Rapid mix tank dimensions in feet and inches, to the nearest one inch.b. Input water horsepower (hp).c. Impeller rotational speed if a vane-disc impeller is used having a diameter half of the tankwidth and employing six flat blades and a baffled tank.
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An oil having a sp.gr. of 0.80 has a kinematic viscosity of 2 x 10-5 m²/s flows in a 100 mm diameter pipe at a rate of 0.001 m³/s. v=% 2 Compute the Reynolds number. 0- a) 758.6 b) 636.5 c) 597.1 d) 448.6 Compute the velocity at the center. V a) 0.3651 m/s c) 0.2546 m/s b) 0.5634 m/s d) 0.4785 m/s 3 Compute the velocity at a distance 20 mm from the center. a) 0.415 m/s b) 0.569 m/s c) 0.214 m/s d) 0.312 m/s
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B. Shear stress.
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Oil having sp. gr. of 0.9 and viscosity v 0.0002 m2/s flows upward through an inclined pipe as shown. Determine the flow rate. Ans. 7.64 L/s 6 cm diameter P2 250 kPa 40 Pi 350 kPa

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