Gambit -- MESHING THE MODEL

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The First row (a) value specifies the height of the first row (a)—that is, the

absolute distance between the entity to which the boundary layer is attached

and the first row of mesh nodes in the boundary layer. (NOTE: For the Aspect

ratio (last) algorithm, the first-row height, a, is uniform across the boundary

layer.)

The Rows value specifies the total number of rows to be included in the

boundary layer.

The Last percent (c/w) value specifies the height of the boundary layer top row

at any node relative to the corresponding mesh interval widths on the attachment entity. At any interior mesh node on the attachment entity (for example,

the endpoints of an attachment edge), the relationship between the top row

GAMBIT allows you to control the shape of the mesh in the region surrounding a Corner or Reversal vertex that connects two edges to which boundary layers are attached. To do so, you must select or unselect (default) the Wedge

corner shape option on the Create Boundary Layer form. The Wedge corner

shape option produces the following effects (see Figure 3-13):

• If you select the Wedge corner shape option, GAMBIT creates a

wedge-shaped boundary-layer region surrounding the connecting

vertex (Figure 3-13(a)).