u/No-Ice-8888

Hello

First of all I'm still a beginner. I'll be really thankful if you can help me.

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I'm running this spillway simulation and right now as I'm at around the time step 18 s, the courant number is reaching the max 0.6, and deltaT is very small (0.00017).

I noticed that the Courant number is high around the foot of the crest which is physically the place with the most turbulence (as you can see the image)

With this the simulation will take a very long time. Is there a way to fix this or should I just wait it out.

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Thanks in advance.