Setting Material Properties

Training Guide > Heat Transfer Tutorials > Heated Fin Tutorial > Setting Material Properties

Setting Material Properties

The default solid material properties for the aluminum alloy fin need to be changed. It should have a density of 2800 kg/m^3, a specific heat of 880 J/kg-K and a thermal conductivity of 180 W/m-K. The surrounding air will be considered compressible based on the Ideal Gas Law; by default it will have a variable density, a molecular weight of 28.9664 kg/kmol, a specific heat of 1003.62 J/kg-K, a thermal conductivity of 0.0260305 W/m-K and a molecular viscosity of 1.85508E-5 Pa-s.

Select the Continua > Aluminum Alloy > Models > Solid > Al > Density > Constant node.

In the Properties window, set the Value property to 2800 kg/m^3

STAR-CCM+ adds the decimal point and units automatically, so by simply entering 2800 you get an entry of 2800.0 kg/m^3.

Within the same Aluminum node, do the following:

Select the Specific Heat > Constant node

Set the Value property to 880 J/kg-K

Select the Thermal Conductivity > Constant node

Set the Value property to 180 W/m-K

Save the simulation.

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