Negative Pressure in Solid Phase Diagram of Water

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SUMMARY

The discussion centers on the concept of negative pressure in the solid phase diagram of water. It explains that when liquid water is contained in a constant volume box and the temperature is decreased, the pressure can drop below zero if bubble formation is inhibited. This phenomenon occurs due to the liquid exerting an inward pull on the container instead of the typical outward push. The same principle applies to gases under similar conditions, where high surface tension prevents droplet formation.

PREREQUISITES
  • Understanding of phase diagrams, specifically the solid phase diagram of water.
  • Knowledge of thermodynamics, particularly the relationship between temperature and pressure in fluids.
  • Familiarity with concepts of surface tension and its effects on fluid behavior.
  • Basic principles of fluid dynamics and behavior under varying pressure conditions.
NEXT STEPS
  • Research the solid phase diagram of water and its implications in various scientific fields.
  • Explore the effects of temperature changes on pressure in fluids, focusing on negative pressure scenarios.
  • Study the role of surface tension in fluid dynamics, particularly in relation to droplet formation.
  • Investigate the theoretical applications of negative pressure in materials science and engineering.
USEFUL FOR

Researchers, physicists, and engineers interested in thermodynamics, fluid dynamics, and the unique properties of water in various states. This discussion is particularly beneficial for those studying phase transitions and the behavior of fluids under extreme conditions.

Juanchotutata
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Hi everyone!

I am working with the theoretical solid phase diagram of water and I would like to know what negative pressure means.

Thank you in advance!
 
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It means what it means. Consider a fluid (imagine e.g. liquid water) which fills a box of constant volume at a given temperature T. Now, if you close the box, keep its volume constant and decrease temperature, the pressure will decrease, and, if the formation of bubbles is somehow inhibited, may even become negative, i.e. the liquid pulls from inside on the box instead of pushing as usual.
The same can happen with a gas (which is also a fluid) as long as drop formation is kinetically inhibited due to the high surface tension of small droplets.
 

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