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 calculator

Nusselt number formula \(\large{ Nu=\frac{h \; l_c}{k}   }\)    Where: \(\large{ Nu }\) = Nusselt number \(\large{ l_c }\) = characteristic length \(\large{ h }\) = heat transfer coefficient \(\large{ k }\) = thermal conductivity