Theory question (pressure drop)
 

What is the best and or easiest way to calculate pressure drop from a oriface plate with multiple holes.

Yeah, this should be basic stuff. But I'm confusing myself trying to think about too much at once.

I've got an idea I started a couple of years ago that I need to think all the way thru. Once its done I'll put it up for all to see/critique.

HELP, please!!! I think I'm going nuts, can't remember back when I learned this stuff...

Experimentally? The only other alternative is to calculate for a single hole and multiply by the number of holes to get total flow. This would get you within spitting distance, but the holes will interact with one another if too closely spaced.