on the COSMOSWorks Thermal Loads toolbar.All bodies with temperatures different than the absolute zero emit energy in the form of thermal radiation.
To define surface to ambient radiation:
Do one of the following:
In the COSMOS AnalysisManager tree, right-click the Load/Restraint icon and select Radiation.
-or-
Click COSMOSWorks, Loads/Restraints, Radiation.
-or-
Click the Radiation
tool on the COSMOSWorks Thermal Loads toolbar.
The Radiation PropertyManager appears.
Under Type, click Surface to ambient.
In the graphics area, select the desired faces.
Under Radiation parameters, do the following:
Select the desired unit and type a value for
the Ambient Temperature 
. To associate a time curve with the ambient temperature,
click Use Time Curve 
then click Edit to
import
or define a time curve. The value of the ambient temperature
at any time instant is calculated by multiplying the specified ambient
temperature value by the corresponding Y value of the time curve. This
option is available for transient thermal studies only.
Set the Emissivity
. To associate a temperature curve with the emissivity,
click Use Temperature Curve 
then click Edit to
import
or define a temperature curve. The value of the emissivity
at a given temperature is calculated by multiplying the specified emissivity
value by the corresponding Y value of the temperature curve.
Set the View
Factor 
.
Click 
.
To define surface to surface radiation:
Do one of the following:
In the COSMOS AnalysisManager tree, right-click the Load/Restraint icon and select Radiation.
-or-
Click COSMOSWorks, Loads/Restraints, Radiation.
-or-
Click the Radiation
tool on the COSMOSWorks
Loads toolbar.
The Radiation PropertyManager appears.
Under Type, click Surface to surface.
In the graphics area, select the desired faces.
To consider radiation to ambient in addition to
surface to surface radiation, click Open
system, select a unit system, and type the Ambient
Temperature . To associate a time curve with the ambient
temperature, click Use Time Curve
then click Edit
to import
or define a time curve. The value of the ambient temperature
at any time instant is calculated by multiplying the specified ambient
temperature value by the corresponding Y value of the time curve. This
option is available for transient thermal studies only.
Set the Emissivity
. To associate a temperature curve with the emissivity,
click Use Temperature Curve then click Edit to
import
or define a temperature curve. The value of the emissivity
at a given temperature is calculated by multiplying the specified emissivity
value by the corresponding Y value of the temperature curve.
Click .
To modify radiation loads:
In the COSMOS AnalysisManager tree, right-click the radiation load you want to modify and click Edit Definition, or double-click the radiation load.
The Radiation PropertyManager appears.
Make the desired changes.
Click .