Chemical Engineering > GATE 2016 > Viscous Sub-layer
Water flows through a smooth circular pipe under turbulent conditions. In the viscous sub-layer the velocity varies linearly with the distance from the wall. The Fanning friction factor is defined as f = τw / (ρ Uavg2 / 2) where τw is the shear stress at the wall of the pipe, ρ is the density of the fluid and Uavg is the average velocity in the pipe. Water (ρ = 1000 kg m-3, μ = 1×10-3 kg m-1 s-1) flows at an average velocity of 1 m s-1 through the pipe. For this flow condition, the friction factor f is 0.005. At a distance of 0.05 mm from the wall of the pipe (in the viscous sub-layer), the velocity (in m s-1, rounded off to the third decimal place), is ______?
Correct : 0.12
Similar Questions
Inhaling the smoke from a burning _________ could _________ you quickly.
A sphere of radius 𝑟 cm is packed in a box of cubical shape.
What should be the minimum volume (in cm3 ) of the box that can enclose the
sphere?
Pipes P and Q can fill a storage tank in full with water in 10 and 6 minutes,
respectively. Pipe R draws the water out from the storage tank at a rate of 34...
Total Unique Visitors
Loading......