Question
Asked Oct 10, 2019
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Fluid Mechanics Question:

You want to design this fountain so that water reaches an elevation of 2m. Find the pressure required in the pipe a A, a very short distance from the nozzle.

2 m
S0 mm
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2 m S0 mm

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Expert Answer

Step 1

Applying continuity equation for points A, B and C:

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Q=v44= "cAc -d c 1V 4 Substituting d with 50 mm and dg with 10 mm: 102 502VB = VB 4 .1) 0.04vg

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Step 2

Applying Bernoulli’s equation between point B and C:

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2 2 Р. Z3 Pg 2g Р. Vc+Zc В + + Pg 2g : Р, & P. are P atm (Zc-Z) 2m Subtituting these values in equation 2. Р. Z3 Pg 2g VB Zc Pg 2g atm atm 2x 9.81x (2) V 6.26m/ s

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Step 3

Now, substituting the value of v...

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0.04v3 0.04(6.26) = 0.25 m /s B v

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Civil Engineering

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