Step 4: Materials

Materials

1.   Set the properties for air.

Materials air Create/Edit...

(a)   Select incompressible-ideal-gas from the Density drop-down list.

(b)   Enter 1021 J/kg-K for Cp (Specific Heat).

(c)   Enter 0.0371 W/m-K for Thermal Conductivity.

(d)   Enter 2.485e-05 kg/m-s for Viscosity.

(e)   Retain the default value of 28.966 kg/kgmol for Molecular Weight.

(f)   Click Change/Create and close the Create/Edit Materials dialog box.

2.   Define the new material, insulation.

Materials Solid Create/Edit...

(a)   Enter insulation for Name and delete the entry in the Chemical Formula field.

(b)   Enter 50  ${\rm kg/m}^{3}$ for Density.

(c)   Enter 800 J/kg-K for Cp (Specific Heat).

(d)   Enter 0.09 W/m-K for Thermal Conductivity.

(e)   Click Change/Create.

  A Question dialog box will open, asking if you want to overwrite aluminum.

(f)   Click No in the Question dialog box to retain aluminum and add the new material ( insulation) to the materials list.

  The Create/Edit Materials dialog box will be updated to show the new material, insulation, in the FLUENT Solid Materials drop-down list.

(g)   Close the Create/Edit Materials dialog box.