Applying Initial Temperatures

You can apply an initial temperature to a model, part, vertex, or edge to define its temperature at the start of a simulation. The initial temperature can be uniform throughout your model or vary in space.

This task shows you how to:

See Also
About Initial Temperatures
Spatially Varying Mapped Data

Apply a Uniform Initial Temperature

You can apply an initial temperature that is uniform throughout your model.

  1. From the Initial Conditions section of the action bar, click Initial Temperature .
  2. Optional: Enter a descriptive Name.
  3. Select the geometry supports in the model.

    For a fluid flow simulation, you must apply an initial temperature to one or more parts or fluid regions. You can click the glyph in the model to select the fluid domain.

  4. Enter a value for the Temperature.
  5. Click OK.

Apply Varied Initial Temperatures with Mapped Data

You can apply an initial temperature using mapped data, which has different values at different points on the model. You can use mapped data in a structural or thermal simulation but not in a fluid flow simulation.

Before you begin: Prepare your spatially mapped data. The mapped data should specify different temperature values at various points in space.
  1. From the Initial Conditions section of the action bar, click Initial Temperature .
  2. Optional: Enter a descriptive Name.
  3. Select the geometry supports in the model.

    You must apply an initial temperature to one or more 2D or 3D bodies in a structural or thermal analysis case.

  4. Set Distribution to Mapped spatial data.
  5. Click Table.
    The Temperature Distribution dialog box opens, where you can enter or import the mapped temperature values.
  6. Choose the Data source for the mapped temperature values:
    OptionDescription
    Table Lets you enter or import the mapped data into a table.
    Referenced document Lets you select a 3DEXPERIENCE document that contains the mapping data. Click to search for the document in the 3DEXPERIENCE platform database. For more information about the required file format, see Mapping Data File Formats.

    The app accounts for changes in the referenced document every time you run a simulation.
  7. If Data source is set to Table, specify the mapped data in the table.
    • To import the data, right-click anywhere in the table and select Import. For more information about the required file format, see Mapping Data File Formats.
    • To enter the data manually, double-click in each cell and enter a value. For example, enter the X-, Y-, and Z-coordinates and the corresponding temperature Value in each row of the table.
  8. Enter a value as the Temperature outside the mapped region.

    The simulation attempts to map each source data point and its associated temperature value onto a point in the target model. If the simulation cannot map a particular point, the app substitutes this default temperature value.

  9. Select an Axis system definition for the coordinates of the mapped data values.
    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 app interprets the X-, Y-, Z-coordinates in the context of the local coordinate system.

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

    Tip: If you click any row in the data table, the corresponding source point is highlighted on the model.

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

    See Mapping Search Controls and Mapping Search Control Options for descriptions of these parameters.

  12. Click OK.