Viscous Flow in Pipes.pdf
Viscous Flow in Pipes.pdf
Viscous Flow in Pipes.pdf
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• Energy Equation2 2p1 V1 p2 V2+ α1 + z1 = + α2 + z2+ hγ 2gγ 2gif D 1= D 2, z z 1=2 (horizontal pipe) with fully developedflow α1 = α2thusl ρVΔ p= p1− p2= γ hL= f D 22l VhL= f D 2 g2L(cf. Eq. 5.89 <strong>in</strong> Section 5.3.4)- Darcy – Weisbach equationvalid for fully developed steady<strong>in</strong>compressible pipe flow horizontal or on a hill.