Applied Fluid Mechanics
Applied Fluid Mechanics
7th Edition
ISBN: 9780133414622
Author: UNTENER
Publisher: YUZU
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Textbook Question
Chapter 11, Problem 11.1PP

Water at 10 ° C flows from a large reservoir at the rate of 1.5   ×   10 2 m 3 / s through the system shown in Fig. 11.13 . Calculate the pressure at B.

Expert Solution & Answer
Check Mark
To determine

To Calculate:

The pressure at B.

Answer to Problem 11.1PP

Pressure at B:

   pB=85.1kPa.

Explanation of Solution

Point A at tank surface:

   pAγ+zA+vA22ghL=pBγ+zB+vB22g

   pA=0,vA=0

   pB=γw[zAzB]

   pB=γw[vB22ghL]

   pB=γw[12mhvB1.0hvB3fT(30)hvBfLDhvB]

Where,

   hvB, velocity head in pipe:

   hvB=vB22g=12g(QA)2=(1.99m/s)22(9.81m/s2)=0.202m

   NR=vDv=(1.99)(0.098)(1.30×106)

   NR=1.50

   Dε=0.0981.5×106=65300f=0.0165

   fT0.010 in zone of complete turbulence.

   pB=9.81kNm3[12m0.2020.202(3)(0.010)(30)(0.202)(0.0165)80.50.098(0.202)]

   pB=85.1kN/m2

   pB=85.1kPa

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Chapter 11 Solutions

Applied Fluid Mechanics

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