Defining a concentrated concentration flux

Display the concentrated concentration flux load editor using one of the following methods:

• To create a new concentrated concentration flux load, follow the procedure outlined in Creating loads (Category: Mass diffusion; Types for Selected Step: Concentrated concentration flux).

• To edit an existing concentrated concentration flux load using menus or managers, see Editing step-dependent objects. To edit the region to which the load is applied, see Editing the region to which a prescribed condition is applied.

Click the arrow to the right of the Distribution field, and select the option of your choice from the list that appears:

• Select Uniform to define a load that is uniform over the region.

• Select an analytical field to define a spatially varying load. Only analytical fields that are valid for this load type are displayed in the selection list. Alternatively, you can click to create a new analytical field. (See The Analytical Field toolset,” for more information.)

In the Magnitude field, enter the concentration flux magnitude (units PL³T⁻¹). A positive magnitude indicates concentration flow into the body at the vertex or node.

If desired, click the arrow to the right of the Amplitude field, and select the amplitude of your choice from the list that appears. Alternatively, you can click to create a new amplitude. (See The Amplitude toolset,” for more information.)

Click OK to save your data and to exit the editor.