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Nusselt number

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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:
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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 defined as follows:
:<math>Nu = \frac{h*l}{k}</math>
:<math>Nu = \frac{h*l}{k}</math>

Latest revision as of 09:45, 17 December 2008

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 defined 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)}
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