Question

Water flows with mass flow rate 0.0566kg/s through a pipe with diameter 30mm and length 600m. Find the pressure drop across the pipe if the friction factor is 8/Re, Density of water=1000Kg/m3 and the viscosity of water=0.0018Ns/m2 Select one: a. 3072 N/m2 O b. 3101 N/m2 0 c. 3111 N/m2 O d. 3001 N/m2 e. 3022 N/m2

Answer 1

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problem loss a Solution's This il based upon concept of fluid mechanica. When Huid flowe in pipe there alwaye pressure in the flow. Given data mass low rate n=0.05 66 Kgl sec pipe diameter = 30mm =0:03 m pipe length 6oom friction factor = 8/re Pe=Reynold Density of fluid (water) 8 i 1000 kg /m² D l no.

water viscosity M= 0.0018 N-s / m2 mass flow rate =dentity a velocity & Area of section of Pipe 3, = 8x v x 1902 0.0566 Kgls =1000 ook 9 1 m3 x V x T og? zxo.o Velocity v=0.08 m/sec friction head loss by Darcy's weisbach eq@ bt =f. &.v2 9) 8 ct - Re 2 Re 8 v.D u -1000X 0.08x0.03 0.0018 *Als/m2 = 1333-33 (laminar flow) C' f = 0.006 2 het oroo 6 x 600 mx 0-08 m/s 2x I-QI mis2 x 0:03m

he 0.039 m Pressure loss in pipe AP = head loss & Weight density water ē hf. op.g = 0.039. X 1000 X 9.81 Pa [AP - 384 Pa] Pressure loss 64/Re 7 Nor Correct option not given options ar per given data But for laminar flow f = so if we UXE tind he e then Pressure get AP=3072 pa ( options a) X loss we 9