Add a Boundary Layer Properties node () to specify the location of the boundary layers and the properties, such as the number of layers and thickness of the boundary layers.

By default, one Boundary Layer Properties node is added as a subnode to a Boundary Layers node. To add additional nodes, right-click a 2D or 3D Boundary Layers node and select Boundary Layers Properties; then enter the properties using the following sections:

Define the edges (for faces in 3D) or boundaries where to add boundary layers. Choose Manual in the Selection list to select the entities in the Graphics window, choose a named selection to refer to a previously defined selection, or choose All boundaries or All edges to select all boundaries or edges respectively.

The default Number of layers is 8.

The default Stretching factor is 1.2. This field is used to specify the increase in thickness between two consecutive boundary layers as a scaling factor; for example, entering 1.3 means that the thickness increases by 30% from one layer to the next.

To specify the thickness of the boundary layer mesh, choose an option from the Thickness specification list: Automatic (the default), First layer, or All layers.

Select the Adjust directions for each layer check box (selected by default) to let the operation adjust the directions, layer by layer. Clear the check box to get a constant direction throughout the layers.