Applying Film Conditions

You can apply a film condition to define heating or cooling due to the convection by surrounding fluids.

This task shows you how to:

See Also
About Film Conditions

Apply Uniform Film Conditions

You can apply a film condition that has uniform values for the film coefficient and reference temperature.

Note: Create a temperature initial condition to establish the starting temperature before solving any simulation with temperature-dependent features.

  1. From the Thermal section of the action bar, click Film Condition .
  2. Optional: Enter a descriptive Name.
  3. Select the geometry supports in the model.

    You must apply a film condition to one or more faces.

  4. From the Film Coefficient options, select Uniform value, and enter a value.
  5. Optional: Click to scale the magnitude of the film coefficient:
    1. Enter a Scale factor that is applied to the magnitude in each step.
    2. Select an Amplitude that defines the magnitude during the step.
  6. From the Ref. Temperature options, select Uniform value, and enter a value.
  7. Optional: Click to scale the magnitude of the reference temperature:
    1. Enter a Scale factor that is applied to the magnitude in each step.
    2. Select an Amplitude that defines the magnitude during the step.
  8. Click OK.

Apply Varied Film Conditions with Mapped Data

You can apply a film condition that has different film coefficient values or reference temperature values at different points on the model. You can choose to apply mapped data for either the film coefficients, the reference temperatures, or both.

Note: Create a temperature initial condition to establish the starting temperature before solving any simulation with temperature-dependent features.

Before you begin: You must have your spatially mapped data prepared. The mapped data specifies different film coefficient values or reference temperature values at various points in space.
  1. From the Thermal section of the action bar, click Film Condition .
  2. Optional: Enter a descriptive Name.
  3. Select the geometry supports in the model.

    You must apply a film condition to one or more faces.

  4. From the Film Coefficient options, select Mapped spatial data.
  5. From the Ref. Temperature options, select Mapped spatial data.

    The reference temperature is the temperature surrounding the selected faces.

  6. Optional: Click to scale the magnitudes of either set of mapped values:

    • Enter a Scale factor that is applied to the magnitude in each step.
    • Select an Amplitude that defines the magnitude during the step.

  7. To specify your mapped data for film coefficients and reference temperatures, click Table.
    The Film Coefficient Distribution dialog box or Temperature Distribution dialog box opens, where you can enter or import the mapped values.
  8. Choose the Data source for the mapped values:
    • Table: Enter or import the mapped data into the table. To import the data, right-click anywhere in the table and select Import. To enter the data manually, double-click in each cell and enter a value. For example, enter X-, Y-, and Z-coordinates and the corresponding Value in each row of the table.

    • Referenced document: Select a 3DEXPERIENCE document that contains the mapping data. Click to search for the document in the 3DEXPERIENCE platform database.

      Changes in the referenced document are taken into account every time you run the simulation.

    For information about the required file format, see Mapping Data File Formats.

  9. Enter a value as the Film coefficient outside the mapped region or the Temperature outside the mapped region.

    The simulation attempts to map all of the source data points and their associated values onto points in the target model. For any target points where the simulation cannot map to a source point, it substitutes this default value.

  10. From the Axis system definition options, select one of the following:
    OptionDescription
    Global Aligns the local feature triad with the global coordinate system.
    Local Aligns the local feature triad with a selected axis system in the model.

    Using a custom local axis system simplifies the three-dimensional definition of points in space—the X-, Y-, Z-coordinates are interpreted in the context of the local coordinate system.

  11. Optional: Select Plot Data to display symbols that indicate the locations and magnitudes of the mapped values on the model.

    Tip: You can highlight the corresponding source point on the model by clicking any row in the data table.

  12. Optional: To adjust the search control parameters, expand the Search tolerance.

    For descriptions of these parameters, see Mapping Search Controls and Mapping Search Control Options.

  13. Click OK.