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Figure 7. Contours of Pressure Coefficient (Click on figure for original size)
Figure 7 shows that most of the pressure coefficient drop occurs around the bend. The pressure coefficient drop is about 3.75 across the bend. This is in excellent agreement with literature estimates.
Figure 8. Contours of Strain Rate (Click on figure for original size)
Contours of strain rate show high velocity gradients around the turn. There are also high strain rates at the boundary layers near the wall. It is postulated that flocculation is directly proportional to the strain rate.
Figure 9. Contours of Turbulent Dissipation Rate (Click on figure for original size)
Contours of turbulent dissipation rate show a similar trend as the contours of strain rate right after the turn. The region of highest turbulence dissipation occurs after the turn. As can be seen from figure 9, this region is roughly twice the length of baffle spacing.
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