Nusselt Number
Nusselt number, abbreviated as Nu, a dimensionless number, describes the ratio of convective heat transfer to conductive heat across a boundary.
Nusselt number formula |
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\(\large{ Nu = \frac{h \; l_c}{k} }\) | ||
Symbol | English | Metric |
\(\large{ Nu }\) = Nusselt number | \(\large{dimensionless}\) | |
\(\large{ l_c }\) = characteristic length | \(\large{ft}\) | \(\large{m}\) |
\(\large{ h }\) = heat transfer coefficient | \(\large{\frac{Btu}{hr-ft^2-F}}\) | \(\large{\frac{W}{m^2-K}}\) |
\(\large{ k }\) = thermal conductivity | \(\large{\frac{Btu-ft}{hr-ft^2-F}}\) | \(\large{\frac{W}{m-K}}\) |
Nusselt number calculator
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Tags: Heat Transfer Equations Thermal Conductivity Equations Heat Equations