Complex calculation. If you just wanted the same flow it would be relatively simple - smaller holes in the botton, gradually larger towards the top, relative to the pressure. However, getting the pressure and volume ballanced to get the same flow force would be more complex. I'd try for tapered holes and some "trial and error" engineering.
If i were doing it I would put the two tubes in as I explained above and put a cap at the far end of the two bottom tubes. I would progressively step drill a hole in the cap until the flow matched the top tube, not scientific but easy to do.
John
It's not only pressure/horizontal velocity that you need to calculate. The water from the higher holes with fall farther, thus faster, in relation to the horizontal velocity imparted, and this is a complex dependant varible, as hole shape/pressure drop is a factor.
If you REALLY want to do this, drill three small holes, and tune it like a flute, (size & shape will be factors), starting with the bottom & working up. It should keep you amused for a good long time.
My memory is not real clear here, but 40 years ago at a cub scout den meeting, the den leader punched 3 holes in a coffee can with an ice pick and the 3 water streams all went the same distance. I don't remember him doing any measuring, but maybe he had spent weeks figuring out the right place to punch the holes.
I have thought about this from time to time over the years but never enough to figure out why.
Carl
coz the higher up, slower, streams have more time to move sideways? :-)
Mark Rand RTFM
I haven't tried it, but my SWAG would be, that this experiment and solution would probably be much easier to accomplish with a coffee can, than it would with a section of 1" tubing that the OP was asking about.
WB metalwork> > Let's say I have a vertical pipe, 1 inch in diameter, 12 inches tall
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