Quote:
|
Originally Posted by WAJ_UK
I've looked into it a bit. I found some useful info but it is mainly experimental data with submerged jets. The only conditions where nozzle plate spacing seems to be when the reynolds number is below 800 which means very low water velocities.
|
At 2LPM, the (per-tube) Reynold's number on the Cascade is about 1000, which basically means that, yes, it is very close to the level you're talking about. I stand by my statement that once you get down to the ~0.5GPM (<2LPM) flow rates that the WCP testbed tests at, then you're into the realm of where altering the jet standoff distance actually becomes important. At 4-10LPM flow-rates, the Cascade is seeing Re numbers of ~2000-5000, and the z/d ratio has been set for that sort of range.