The model has a specified concentration boundary in the top two layers of row 1, columns 12 to 15. The concentration in the boundary is 500. You can use a line object to create the boundary. The Z coordinates can be used to ensure that the object applies to both layers 1 and 2.
Screen capture of the Object Properties dialog box illustrating the use of Z coordinate formulas to ensure that the CNC boundary applies to layers 1 and 2.
Screen capture of the Object Properties dialog box illustrating the specification of a constant concentration boundary.
