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The shape is put in the sketch the way the baffles are denoted in the Fluent sketcher. Additional procedure is required to generate the mesh appropriately with the shapes in the sketch. For the standard flocculator sketch, the sketch can be partitioned to control the size of the elements along the wall of the modeled baffle. The lines can be implemented around the shapes in the sketch to control the accuracy of the mesh around the shape. The circle has another outlined just outside of the cutout of the circle to ensure accuracy of y-plus on the surfaces of the circle. The plate is implemented by partitioning the baffle into three parts across its width. The center section is the width of the plate. The case with the half cylinder has not been meshed because of difficulty to draw boundaries around the half cylinder to allow the mesher to generate uniform quadrilaterals around the shape.
Boundary layer element sizing (click for larger picture)
Meshing:
The areas of the sketch are meshed by dividing the edges into divisions. The edges on the wall are biased so smaller elements are generated at the wall. There are more partitions for the in the mesh for the flocculator with the geometries. The mesh is biased toward the upper and lower surfaces of the plate for the case with the plate in the flocculator.
circle mesh.png! !mesh with circle bl.png*!