Hmm I just checked your simulation and on the surface it does look the same as what @jousefm did with the exception of a few things. It seems like you’ve modified the starting geometry and removed one of the baffles in the center. That was the main thing I could see that was different other than a slight change in velocity input where Jousef set it as 418 in/s compared to your 408 in/s but it shouldn’t make such a huge difference. Other than that, the convergence graph and of course the resultant flow velocity out of the holes is very different from what Jousef got. It seems like your flow is accelerating out of the holes which is particularly strange.
I am currently remeshing your “new” geometry without the baffles and will re-run with Jousef’s parameters to see if I can get somewhat logical results.
Referring to what Jousef has mentioned and me earlier as well, some concrete values or percentage difference in the flow rate to reference off would be ideal. If instead the objective is to approach this by determining what designs will allow the flow rate to drop down to a significant enough level then probably calculating out the ideal flow rate out of the holes with certain assumptions would be able to give you that ballpark ideal figure you’re looking for.
Off the top my head I would assume you want laminar flow out of the holes? Not sure if its possible with the flow rate of this speed or how to compute out the Reynold’s number of the outlets considering that turbulence is involved. Any ideas on this Jousef and @1318980?
Get back to you once I’ve identified the key issue if any.