Supercooling of water under pressure

[Dave45]

http://www.lsbu.ac.uk/water/explan5.html#diff

At low temperatures, the self-diffusion of water increases as the density and pressure increase.
Variation in Diffusivity of water with pressure

Data for these tables was calculated froma the IAPWS viscosity data [540]. The dashed lines indicate the maxima.

Variation in Diffusivity of water with density

The increase in self-diffusion with density (within the range of about 0.9 g cm-3 up to about 1.1 g cm-3, at low temperatures) is in contrast to normal liquids where increasing density decreases self-diffusion as the molecules restrict each other's movements. The density increase may be due to increasing temperature, below 4°C, at atmospheric pressure or due to increasing pressure at low temperatures. Liquids normally show reduced self-diffusion when they are squeezed but water at 0°C increases its diffusivity by 8% under a pressure of about 200 MPa [226] and the diffusivity of supercooled water at -30°C increases by 60% with a similar pressure increase. Further increase in pressure reduces the diffusivity in common with the behavior of other liquids. The movement of water becomes restricted at low temperatures as the more open (lower density) structure produced on cooling (see above) is formed by stronger and more complete hydrogen bonding, which reduces the self-diffusion. The strength of the hydrogen bonding is a controlling influence in this anomalous region, where the hydrogen bond angles and the inter-molecular distances are strongly coupled and this order decreases on compression [169] due to the collapse of ES structures to CS structures. Simulation studies have shown that self-diffusion goes through a minimum as the density of water is reduced below about 0.9 g cm-3 followed by an increase with further density reduction, as might be expected from most liquids [402], due to the disruption of the network at low density as the now-stretched hydrogen bonds are broken [626]. The maximum in the self diffusion is brought about as at even higher pressures there is an increased packing density due to the gradual phase transition to interpenetrating hydrogen bonded networks.



For the same reasons, the molecular rotational movement of water (reciprocal rotational relaxation time) also varies in direct proportion to the changes in self-diffusion (translational movement).



and then shock the hell out of it

[Dave45]

I work in construction I have an airless spray rig that puts out about 2300 psi at the tip if I could supercool the tip and create a chamber at the tip that will break the water maybe just maybe.
got work to do

[Dave45]

maybe a supercooled high pressure injector into a plasma stream inside piston chamber.

[Dave45]

22 Hast thou entered into the treasures of the snow? or hast thou seen the treasures of the hail,
23 Which I have reserved against the time of trouble, against the day of battle and war?

How is hail made in a thunderstorm? its supercooled

Every hailstone begins to form as an ice nucleus, a small cluster of supercooled water droplets or clumps of snow. This center is called a graupel, and it may continue to accumulate ice, melt in the thundercloud and turn to rain, or be smashed apart by other graupels. If a bug, piece of bark, seed, or stick gets blown up into the storm cloud, it creates another possible nucleus for a hailstone.

[Dave45]

spray tip high pressure through dry ice into intense uv into plasma