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With the geometry, we can then set up the mesh for our model. Image Added
Figure 2: Meshing Parameters (Click on the figure to see the original size)

 
Figure 2 shows the meshing parameters that were used. The boundary layers was first establish at all the wall surfaces. The boundary layer was set up such that the solution obtain in gambit would provide result of y+ of less than 5. After that, the mesh edges were set up such that they will provide higher mesh resolution near the turn and lower resolution far from the turn.

 
   
Figure 2: Mesh of the Flocculation Tank 

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