Question

Three pipes are in parallel configuration with a total head loss of 20.3 m. The pipe...

Three pipes are in parallel configuration with a total head loss of 20.3 m. The pipe data are:

Pipes' data
Pipe L (m) D (m) Absolute roughness (mm) Relative roughness (Absolute roughness / D)
1 100 0.08 0.24 0.003
2 150 0.06 0.12 0.002
3 80 0.04 0.20 0.005

Use density = 1000 kg/m^3 and kinematic viscosity = 1.02 x 10^-6 m^2/s. Calculate the total flow rate. Neglect any minor losses.
Show the working all the way to the final answer ΣQ = 0.02772 m^3/s .

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Answer #1

Laminar flow + Critical Transition zone zone 0.1 0.09 0.08 0.07 0.06 Complete turbulence, rough pipes 0.05 0.015 0.04 FrictioGiven 1st page Solution acem Roughness & (mm) Pipe I Relative roughnes zos loo 0.24 0.003 0.002- 0.20 0.005 givers density f=2nd page a = AV = RX0.08) a = AV = Px0.08) 3.454 = 0.01736 m3/3 4 Guessing fz = 0.023€ 1694 milo V222.609 m/s corresposding R3rd page Choz a 0.0313% 30 5 122 13 2013 0.04 Lex 9.8 81 2) V3 = 2.522 rols Q² Az XV3 a Txo.042 42.522 20.003169 m3/ Total ra

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