The best way to compare the two simulations is to watch the animations included on this Web page|
Overall, the narrow domain yielded results that are qualitatively very similar to those obtained using the wide
No quantitative comparisons were performed. This could be an interesting follow-up to this project.
A second simulation was started (250 time-steps completed) using the narrow domain but doubling the refinement
at the surface. Additional future work on this project may involve completing this refined
simulation to find out whether
the increased refinement brings the results any closer to the wide simulation.
- Upstream from the spillway, the flow was nearly identical, as expected.
- The flickering "plume" patterns formed by the x-velocity between the obstacles have
same extent and rhythm.
- A large wave forms during the first 150 time-steps, followed by a backward-moving wavelet.
Both features are
captured in both simulations.
- Downstream from the obstacles, the shape of the free surface exhibits fine detail that is different in the wide
and narrow simulations. However, the large waves generated at the point where water pours into the lower level of
the dam rise and fall at the same rhythm.