External Radiation

Analysis > Radiation > External Radiation

This option is used to specify the incoming radiation heat flux from an external source on a surface.

Description

  • Select faces

    Select the faces on which the radiation heat flux needs to be specified.

  • Type
    You can specify Radiation heat flux in 2 ways:
    • Constant - Used to specify a constant value of the Radiation heat flux.
    • Piecewise Linear - To specify piecewise linear values for Radiation heat flux on a surface using a table. This curve can be used to capture change in Radiation heat flux across the surface.
  • Radiation heat flux
    • For Constant Type: Specify the Radiation heat flux on the surface.
    • For Piecewise Linear Type: Specify the curve fit values for the Radiation heat flux to capture changing Radiation heat flux across the surface.

  • Reference Temperature

    Specify the external reference temperature. A multiplier can be used with the emissivity to provide inputs that vary with time and uniformly scale the emissivity values.