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Nusselt Number

The Nusselt number is the ratio of convective to conductive heat transfer across (normal to) the boundary.

The Nusselt number equals the heat transfer coefficient times the characteristic length, and divided by the thermal conductivity.

Formula

QuantityVariable["Nu", "NusseltNumberHeatTransfer"] == (QuantityVariable["K", "HeatTransferCoefficient"]*QuantityVariable["l", "Length"])/QuantityVariable["k", "ThermalConductivity"]

symbol description physical quantity
Nu Nusselt number for heat transfer "NusseltNumberHeatTransfer"
k thermal conductivity "ThermalConductivity"
K heat transfer coefficient "HeatTransferCoefficient"
l characteristic length "Length"

Forms

Examples

Get the resource:

In[1]:=
ResourceObject["Nusselt Number"]
Out[1]=

Get the formula:

In[2]:=
FormulaData[ResourceObject["Nusselt Number"]]
Out[2]=

Use some values:

In[3]:=
FormulaData[ ResourceObject[ "Nusselt Number"], {QuantityVariable["k","ThermalConductivity"] -> Quantity[1, ("Watts")/("KelvinsDifference" "Meters")], QuantityVariable["Nu","NusseltNumberHeatTransfer"] -> 1}]
Out[3]=

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