Need help on best slot

[rygh]

Took the pics, but then the wife needed the camera. Stay tuned.

Looking closely, the first inch or two is not as good as I would like.
I might drill a hole from the top, just before the start of the screen, and insert a small pipe.
That would act as a baffle, and slow down the flow in the beginning.
And if it does not work, it is just another overflow hole.

I am also considered bringing water into the slot pipe from both ends, but the extra pipes become a big hassle.

[rygh]

Ok, here is the slot, with the slightly larger holes drilled every half inch.
Easy with a drill press, but probably a royal pain without.

[rygh]

Here is the bottom of half of the screen. Pretty good.
I lifted it up. It is really in the water when running.

There are two separate screens in each ATS box. Mostly because that was the size they sold.

[rygh]

Here is the main flow on the screen, looking good.
I tried to add blue food coloring for the pics, but still hard to see.

[rygh]

This part is still a bit of a problem. It is the side where the water enters.
About 3/4" of the right side of the mesh gets little water.
And you can see the horizontal component of the flow if you look carefully.
Probably not helped by where I put the clip.
I am probably not going to worry about it though.

[Gigaah]

I posed the question in a..albiet sorta dead Computational fluid dynamics forum. The only answer from the one person that must go there was to. Taper the pipe, or taper the slit. something to keep in mind.
Go straight to the experts..thats how I do it.

This idea didn't pan out for me exactly. It sort of works but I think the baffels are too large and the flow ends up too much on the infeed end. i started knocking out some of the baffels thru the slit(its egg crate by the way). That helped a great deal but I still think the baffels that it makes are too large. I'm trying to slow the flow down and attempt to even out the flow. It was kinda a hassle so I scrapped the idea..however the concept might prove usefull to someone else. I super glued each end onto the pipe. the baffles break of pretty easy..its the very edge of a sheet of egg crate.

[attachment=1:7rzwe6zs]IMG_3183.JPG[/attachment:7rzwe6zs]

[attachment=1:7rzwe6zs]IMG_3183.JPG[/attachment:7rzwe6zs]

[rygh]

Tapering the pipe and/or slit will theoretically compensate for the pressure difference, and make the flow
even across the length of the pipe. So that helps.
But that is probably easier to do by changing the spacing of the extra wider holes. Say from 3/4 on the pressure end, to 3/8 on the other.

But the taper will do nothing to fix the horizontal velocity component of the water.
Baffles should help that.

Another crazy thought is a smaller pipe. with lots of random holes, inside a larger pipe that has a slot. But a pain.

For now, my plan is to just ignore it. I have so many other things to build.