while i remember the results for increased performance were probably due ot the updraft effect of two jets. Where the two paterns colide a upwards spike of flow is created which is good for cooling. Overall the jets without this effect have lower cooling ability as they obviously cover a much smaller area and tend to interfere wiht each other if im reading this right.
Im trying to find jet pulsing stuff. Hoewer some chinese guys seemed to have some sucess with moving the jets around so the jet center is in a different location. This approach is broadly similar to the pulsing in that its trying to break up the boundary layer at the surface to aid heat transfer. It also has the side effect of increasing the cooling area under the jet flow. How to do this is slightly problematic. My crazy idea and i highlight this is crazy, would be to use the pump pressure to shift the nozzle plate around. Take two bypass loops out to the sides of the blocks and alternate them (using electronic valves) using flow momentum to shift the nozzle block around a little (obviously suspending it first). Not perfect but certainly acceptable for the high end bling. I would prefer piezo electric or some kind of water fan powered arrangement but moving arround the nozzles but it needs a good think. Im sure that some how turbulence could be used as well.
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