First slide

Viscous flow/Laminar flow

Question

Water flows at a speed of 6 cms^–1 through a tube of radius 1cm. Coefficient of viscosity of water at room temperature is 0.01 poise . The Reynold number is

Easy

Solution

$R = \frac{V_{c} ρ d}{η} = \frac{0.06 \times 1000 \times 0.02}{0.001} = 1200$

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