Simple geometries. Internal forced convection
Thermal and mass convection - Nusselt number: part 1

Article REF: BE8206 V1

Simple geometries. Internal forced convection
Thermal and mass convection - Nusselt number: part 1

Author : Jacques PADET

Publication date: October 10, 2005, Review date: January 18, 2017 | Lire en français

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2. Simple geometries. Internal forced convection

In a tube, the settling length (dynamic or thermal) is the distance from the inlet at which the shape of the velocity (or temperature) profile no longer depends on the x-axis.

2.1 Circular tube

2.1.1 Laminar flow

$\begin{array}{l} \frac{L_{h}}{D_{h}} = 0,59 + 0,056 R e_{D_{h}} \\ \frac{L_{h}}{D_{h}} = 0,057 5 R e_{D_{h}} \end{array}$

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