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Surface Tension of Fluid

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Surface tension is a fundamental property of fluids, occurring at the boundary between a liquid and a gas or between two immiscible liquids. This phenomenon arises from the cohesive forces between molecules at the fluid's surface, creating an effect similar to a stretched elastic membrane. Inside each fluid, molecules are equally attracted in all directions by neighboring molecules, but surface molecules experience a net inward force, resulting in surface tension.
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Heating and Cooling Curves

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The process of a solid dissolving in a liquid to form a solution is governed by the solubility limit, which is the maximum amount of the solid substance, or solute, that can be dissolved in a specific volume of the liquid or solvent. As the solute dissolves, it reaches a point where no more solute can be dissolved at a given temperature - this is known as the saturation point. However, if further solute is added and it manages to dissolve, the solution becomes supersaturated. Supersaturated...

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Related Experiment Video

Updated: Mar 12, 2026

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

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

Published on: April 10, 2017

Sustaining Superheated Liquid within Hydrophilic Surface Texture.

Paul R Jones¹, Ashley R Elliott¹, Neelesh A Patankar¹

¹Department of Mechanical Engineering, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208, United States.

Langmuir : the ACS Journal of Surfaces and Colloids

|November 3, 2016

Summary

This summary is machine-generated.

Researchers developed a new method using hydrophilic pores to keep liquid on surfaces during pool boiling. This enhances heat transfer by maintaining nucleate boiling and preventing film boiling, improving energy efficiency.

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Last Updated: Mar 12, 2026

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Area of Science:

Thermodynamics
Surface Science
Heat Transfer

Background:

Maintaining nucleate boiling during pool boiling enhances heat transfer.
Filmwise boiling reduces heat transfer efficiency.
Keeping liquid in contact with the heating surface is crucial for efficient boiling.

Purpose of the Study:

To propose a novel mechanism for sustaining superheated liquid within hydrophilic pores.
To design superwetting hydrophilic surfaces that promote sustained liquid contact.
To investigate an alternative wetting pathway via vapor condensation within surface textures.

Main Methods:

Adapting nucleation theory to design specific surface geometries.
Employing molecular dynamics simulations to verify the proposed mechanism.
Analyzing the behavior of superheated liquid within engineered hydrophilic pores.

Main Results:

Simulation results align with theoretical predictions.
Demonstrated the ability of superheated liquid to reside within the designed surface texture.
Verified the proposed mechanism for sustaining liquid within hydrophilic pores.

Conclusions:

The proposed mechanism effectively sustains superheated liquid in hydrophilic pores.
Superwetting hydrophilic surfaces offer a new approach to enhance boiling heat transfer.
The design strategy provides an additional wetting pathway through vapor condensation.