Ethanol at 20°C flows at 0.008 m³/s through a horizontal cast iron (ε = 0.26 mm) pipe with L = 12 m and d = 5 cm. Neglecting entrance effects, estimate (a) the pressure gradient dp/dx, (b) the wall shear stress Tw, and (c) the percentage reduction in friction factor if the pipe walls are polished to a smooth surface. Ethanol properties at 20 °C: p= 789 kg/m³, μ = 0.0012 kg/m.s

Ethanol at 20°C flows at 0.008 m³/s through a horizontal cast iron (ε = 0.26 mm) pipe with L = 12 m and d = 5 cm. Neglecting entrance effects, estimate (a) the pressure gradient dp/dx, (b) the wall shear stress Tw, and (c) the percentage reduction in friction factor if the pipe walls are polished to a smooth surface. Ethanol properties at 20 °C: p= 789 kg/m³, μ = 0.0012 kg/m.s

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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