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Related Concept Videos

Phase Diagram01:19

Phase Diagram

The phase of a given substance depends on the pressure and temperature. Thus, plots of pressure versus temperature showing the phase in each region provide considerable insights into the thermal properties of substances. Such plots are known as phase diagrams. For instance, in the phase diagram for water (Figure 1), the solid curve boundaries between the phases indicate phase transitions (i.e., temperatures and pressures at which the phases coexist).
Phase Diagram01:24

Phase Diagram

A phase diagram is a graphical representation of the physical states of a substance under different conditions of temperature and pressure. It shows the boundaries between solid, liquid, and gas phases and the conditions at which these phases coexist in equilibrium. An area in a phase diagram represents a single phase, whereas lines or phase boundaries represent the equilibrium between two phases.In the phase diagram of water, the boundary line between the solid and liquid states illustrates...
pV-Diagrams01:18

pV-Diagrams

The pV diagram, which is a graph of pressure versus volume of the gas under study, is helpful in describing certain aspects of the substance. When the substance behaves like an ideal gas, the ideal gas equation describes the relationship between its pressure and volume. On a pV diagram, it is common to plot an isotherm, which is a curve showing p as a function of V with the number of molecules and the temperature fixed. Then, for an ideal gas, the product of the pressure of the gas and its...
Vapor Pressure02:34

Vapor Pressure

When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules move randomly about, they will occasionally collide with the surface of the condensed phase, and in some cases, these collisions will result in the molecules re-entering the condensed phase. The change from the gas phase to the liquid is called condensation. When the rate of condensation becomes equal to the rate of vaporization, neither the amount of the liquid nor the amount of the vapor...
Freezing Point Depression and Boiling Point Elevation03:12

Freezing Point Depression and Boiling Point Elevation

Boiling Point Elevation
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
Freezing Point Depression and Boiling Point Elevation01:24

Freezing Point Depression and Boiling Point Elevation

When a non-volatile solute is added to a pure solvent, it results in the lowering of the freezing point of the solvent. This phenomenon is called freezing point depression. The extent to which the freezing point is lowered depends on the molality of the solute -the number of moles of solute per kilogram of solvent and the cryoscopic constant of the solvent.From the plot of chemical potential, μ, against temperature, it is evident that the μ of both solid and liquid solvents decrease with...

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Related Experiment Video

Updated: May 18, 2026

Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns
07:32

Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns

Published on: April 10, 2017

Boiling crisis as a critical phenomenon.

P Lloveras1, F Salvat-Pujol, L Truskinovsky

  • 1LMS, Ecole Polytechnique, 91128 Palaiseau, France.

Physical Review Letters
|September 26, 2012
PubMed
Summary
This summary is machine-generated.

This study reveals power law statistics in boiling crises, linking critical heat flux to a drying-rewetting competition. A novel spin model explains these intermittency and avalanche phenomena.

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Last Updated: May 18, 2026

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Published on: April 10, 2017

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Area of Science:

  • Thermodynamics
  • Statistical Physics
  • Fluid Dynamics

Background:

  • Boiling crises exhibit complex phenomena like intermittency and avalanches.
  • Understanding the underlying statistical mechanics is crucial for predicting critical heat flux.
  • Previous studies lacked experimental data on intermittency during boiling crises.

Purpose of the Study:

  • To experimentally investigate intermittency and avalanche distribution during boiling crises.
  • To develop a theoretical model explaining the observed power law statistics.
  • To elucidate the role of drying-rewetting competition at critical heat flux.

Main Methods:

  • Experimental measurements of intermittency and avalanche distributions during boiling crises.
  • Development of a simple spin model to capture critical exponents.
  • Analysis of power law statistics and critical phenomena.

Main Results:

  • The first experimental evidence of intermittency and avalanche distributions during boiling crises.
  • A spin model successfully replicates the measured critical exponent.
  • Identification of a percolation phenomenon driven by drying-rewetting competition.

Conclusions:

  • Boiling crisis phenomena are governed by statistical laws, specifically power law distributions.
  • A drying-rewetting competition mechanism underlies the critical heat flux.
  • The proposed spin model provides a framework for understanding boiling crisis dynamics.