Nusselt Number Calculator

Posted by Dinesh on

Online Nusselt calculator to calculate ratio of convective to conductive heat transfer across the boundary using Nusselt Number equation.

In heat transfer at a boundary (surface) within a fluid, the Nusselt number (Nu) is the ratio of convective to conductive heat transfer across (normal to) the boundary. In this context, convection includes both advection and diffusion. Named after Wilhelm Nusselt, it is a dimensionless number.

Nusselt Number Calculation

Formula:

Nu=hLk

where,
h is the convective heat transfer coefficient of the flow
L is the characteristic length
k is the thermal conductivity of the fluid