You guys need to think outside of the box a bit more.
I like the tunable jets Cathar. Maybe add the ability to raise or lower them according to the flow.
Honestly though. I don't know why you would want the jet tubes any higher. The closer they are to the plate the better, until you restrict flow anyways. That will be anywhere around 1mm with those jets you use. Of course higher flow/pressure always allows for them being further away but from what I seen and the math Nusselt number will tell you the closer the better. Use Nusselt average over the area, the distance from the stagnation point.
Nu=hD/k
Re=VD/v
I'm missing a few variables as I don't know how to enter them in using a keyboard.
D=diameter
V=velocity
v=kinematic viscosity
k= thermal conductivity
h= average heat transfer
Of course the shape of the jet changes all that then it gets more complicated. Basically a different shape will allow a bigger cooling area.
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