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Updated: Mar 3, 2026

Generation and Control of Electrohydrodynamic Flows in Aqueous Electrolyte Solutions

Generation and Control of Electrohydrodynamic Flows in Aqueous Electrolyte Solutions

Published on: September 7, 2018

Controlling turbulent drag across electrolytes using electric fields.

Rodolfo Ostilla-Mónico¹, Alpha A Lee¹

¹School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA. rostillamonico@g.harvard.edu alphalee@g.harvard.edu.

Faraday Discussions

|May 5, 2017

Summary

This summary is machine-generated.

Controlling friction with electric fields is vital for tribology. However, turbulent drag in electrolytes at high speeds cannot be managed with static electric fields alone, suggesting new approaches are needed.

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Last Updated: Mar 3, 2026

Generation and Control of Electrohydrodynamic Flows in Aqueous Electrolyte Solutions

Generation and Control of Electrohydrodynamic Flows in Aqueous Electrolyte Solutions

Published on: September 7, 2018

The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids

The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids

Published on: September 30, 2014

AC Electrokinetic Phenomena Generated by Microelectrode Structures

AC Electrokinetic Phenomena Generated by Microelectrode Structures

Published on: July 28, 2008

Area of Science:

Tribology
Computational fluid dynamics
Electrochemistry

Background:

Reversible control of friction is crucial for industrial applications.
Electric fields can control friction in electrolyte lubricants at low sliding velocities.
The behavior of friction at high sliding velocities under electric fields is not well understood.

Purpose of the Study:

Investigate hydrodynamic friction in electrolytes under shear beyond the transition to turbulence.
Explore the potential for electric field control of friction at high sliding velocities.

Main Methods:

Developed a novel, highly parallelized numerical method.
Solved the coupled Navier-Stokes and Poisson-Nernst-Planck equations.

Main Results:

Turbulent drag in dilute electrolytes cannot be controlled by static electric fields alone.
The study identified limitations in current models for electric field effects on turbulent flow.

Conclusions:

Static electric fields are insufficient for controlling turbulent drag in electrolytes.
The limitations of the Poisson-Nernst-Planck model suggest pathways for future research into electric field-based control of turbulent drag.