Project ForgeFluid Mechanics
Bernoulli's Equation & Flow
GATE 2014
Medium
Water flows through a pipe having an inner radius of 10 mm at the rate of 36 kg/hr at 25°C. The viscosity of water at 25°C is 0.001 kg/m·s. The Reynolds number of the flow is __________.
637(± 4 accepted)
Explanation
Using the mass-flow form Re=4ṁ/(πDμ): ṁ=36/3600=0.01 kg/s, D=0.02 m, μ=0.001 kg/m·s. Re=4×0.01/(π×0.02×0.001)≈636.9.
Source: GATE ME 2014 (Session 1 / Set-1) (2014)
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