CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Wiki > Nusselt number

Nusselt number

From CFD-Wiki

(Difference between revisions)
Jump to: navigation, search
Line 1: Line 1:
-
=='''Nusselt number'''==
 
-
 
Nusselt number is dimensionless number which is useful for convective heat transfer calculations. heat transfer can be expressed in terms of Nusselt number. it can be defied as follows:
Nusselt number is dimensionless number which is useful for convective heat transfer calculations. heat transfer can be expressed in terms of Nusselt number. it can be defied as follows:

Revision as of 10:24, 5 December 2005

Nusselt number is dimensionless number which is useful for convective heat transfer calculations. heat transfer can be expressed in terms of Nusselt number. it can be defied as follows:

Nu = \frac{h*l}{k}

Where

Nu = \mbox{Nusselt number}
h = \mbox{Convection heat-transfer coefficient (constant of proportionality ) (W/m2 K)}
l = \mbox{Characteristic dimension of th esolid object (m)}
k = \mbox{Thermal conductivity of the solid (W/m k)}
My wiki