Mathematical model of Heat Transfer Coefficient between inner surface of the pipe and moving fluid:
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U = \frac{\lambda}{d} \, {\rm Nu} |
where
The Nusselt number (Nu) correlations are:
| Stagnant fluid | Natural Convection | Forced Convection |
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| OEIS sequence A282581 |
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| {\rm Nu}=3.6568 |
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| \mbox{Nu}_D= \left[ 0.825 + \frac{0.387 \, \mbox{Ra}_D^{1/6}}{ \left[ 1+ (0.492/\mbox{Pr})^{9/16} \right]^{8/27}} \right]^2 |
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| {\rm Nu}=0.023 \cdot \mbox{Re}_D^{0.8} \cdot \mbox{Pr}^{0.4}\cdot \left( \frac{\mu}{\mu_w} \right)^{0.14} |
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See also
Physics / Thermodynamics / Heat Transfer / Heat Transfer Coefficient (HTC) / Heat Transfer Coefficient (HTC) @model
[ Thermal conductivity ] [ Nusselt number (Nu) ]
References
