Re in the Storm/G7's jets is around 400*Q, where Q is the block input flow-rate in LPM. In the Storm/G4's it is around 850 * Q.
TBH, can't say that I've noticed that the flow-regime within the jet itself is all that important with respect to the results seen. Being submerged jets the Cascade block sat the jets up high enough from the cup base so that the shearing action of the water rushing out of the cup really turbulated the flow coming out of the jet by the time it got towards the bottom of the cup, hence the "mash in a cup" effect as I eventually came to describe the Cascade's workings.
The Storm disrupts the jet flow prior to striking the base-plate and so induces turbulence artificially.
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