Surface Tracer Source

Within a tracer study you can specify a surface source for the analyzed admixture.

Procedure

  1. Open the Surface Tracer Source  dialog:

    • Under the created Tracer Study item in the Flow Simulation Analysis tree, right-click the Sources item and select Insert Surface Source.

    The Surface Tracer Source dialog opens.

  2. Under Selection, select faces on which you intend to specify the surface source in the graphics area (see “Selection List” for details).

    The selected faces appear in the Faces to Apply the Surface Tracer Source  list.

    You can also select components in the flyout FeatureManager design tree.

    Tip

    To quickly select faces on which you have specified a boundary condition, fan or surface source, select the corresponding feature in the Flow Simulation Analysis tree. All faces belonging to the feature will be automatically selected.

    • You can also select a reference Coordinate System  to specify a non-uniform mass distribution over the selected faces.

      The reference Coordinate System selected by default is the Global Coordinate System (see “Global Coordinate System” for details).

      Tip

      You can replace the default coordinate system by selecting your coordinate system in the flyout FeatureManager design tree.

      To create a coordinate system, click Insert > Reference Geometry > Coordinate System.

      If you want to use a cylindrical Coordinate System, select the axis of the specified Coordinate System as the Reference axis. The selected Coordinate System and Reference axis also define a local spherical coordinate system.

  3. Under Tracer, select the tracer you want to specify the source for.

    In case you consider a tracer with the Saturation Pressure specified in the Engineering Database, you can simulate its evaporating from a liquid spot by selecting Liquid surface option. If this option is selected the Parameter group is unavailable.

  4. In the Parameter group select the appropriate source type from the following types:

    • Mass Fraction , dimensionless. Specify the value for the mass fraction.

    • Mass Flow , in kg/s. Specify the value for the mass flow rate.

    • Specific Mass Flow , in kg/s/m2. Specify the value for the mass flow per unit area.

    If you want to specify a time- or coordinate-dependent value, click Dependency  to the right of the parameter value input box (see “Dependency” for details).

  5. Click OK .

    -or-

    Click Keep Visible  before clicking OK  to keep the dialog open and define more surface tracer sources.

Results

The new surface tracer source item (SS) appears in the Flow Simulation Analysis tree.

To edit the definition of a surface source, in the Flow Simulation Analysis tree, double-click the surface tracer source item, or right-click the item and select Edit Definition.

Also you can use a callout in the graphics area to edit definition of a surface source (see “Feature Callout” for details).

Parent Topic: Tracer Studies