[Physics] Freezing water in a closed container

fluid dynamicsphase-transitionwater

We know that density of ice reduces by about 8% during freezing, this means it expands to have little higher volume. But if I fill water in a container (entire volume) which has very low coefficient of thermal expansion at 0 $^\circ$C, will the space constraints stop water from freezing?

Best Answer

If you force your liquid in a container you will increase the pressure during the freezing process. This will lower the freezing temperature and thus will indeed "stop the water from freezing". However, if you cool down further, probably at some point a different crystal structure (or the same with lower inter-atomic distances) will form and thus the water will still freeze, just with higher density.

While I do not know this effect from water I know for sure this happens to other materials if the volume is limited.