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Turbulent Pipe Flow - Panel
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Let's revisit the pipe flow example considered in the previous exercise. As before, the inlet velocity is 1 m/s, the fluid exhausts into the ambient atmosphere and density is 1 kg/m3. For µ = 2 x 10 -5 kg/(ms), the Reynolds no. based on the pipe diameter and average velocity at the inlet is

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{latex}
\large
$$
{Re} = {\rho VD \over \mu} = 10,000
$$
{latex}

This change of viscosity has taken us from a Reynolds number of 100 to 10,000. At this Reynolds number, the flow is usually completely turbulent.

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