Table of contents
No headers Click Materials from the Setup tab:

In this step, we create a new air material with an appropriate value of emissivity.
To open the Material quick edit dialog, click Edit from the Materials context menu:

On the Material quick edit dialog, Type = Fluid
On the Material line, Click Edit...
Enter the Name = Air_Emissivity
Select My Materials from the Save to database menu.
Click the Emissivity button.
Value = 0.3
Click Save.
For more about emissivity...
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