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It is theoretically possible to drive a water jet to pressures of, say, 7,000,000 psi using explosives with a high detonation velocity, the shaped charge effect and a single use device. Higher pressures may well be possible with money, effort and optimization, for example swapping the RDX-based explosives in common shaped charges (detonation velocity around ...


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RPM is just another way to say ${min^{-1}}$ so to make your equations dimensionless while still using RPM you need to convert your other measurements using seconds to minutes. For the head coefficient $c_h=\dfrac{gH}{N^2D^2}$ this means you need to convert $g$ from $m.s^{-2}$ to $m.min^{-2}$ (in other words multiply by 3600) For the volume coefficient $c_q= \...


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