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Related Experiment Video

Updated: May 18, 2026

The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids
10:03

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Published on: September 30, 2014

ac electric fields drive steady flows in flames.

Aaron M Drews1, Ludovico Cademartiri, Michael L Chemama

  • 1Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|October 4, 2012
PubMed
Summary
This summary is machine-generated.

Time-oscillating electric fields applied to plasma flames generate steady gas flows. This phenomenon, driven by ion movement and recombination, allows for non-contact flame manipulation at higher frequencies.

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Area of Science:

  • Plasma physics
  • Fluid dynamics
  • Combustion science

Background:

  • Flames contain ions and exhibit complex fluid dynamics.
  • Electric fields are known to interact with plasmas.

Purpose of the Study:

  • To investigate the effect of time-oscillating electric fields on flame gas flow.
  • To develop a model explaining the observed flame manipulation.
  • To explore non-contact methods for controlling flames.

Main Methods:

  • Applying time-oscillating electric fields to flame plasmas.
  • Experimental observation of induced gas flows.
  • Developing a quantitative model for ion dynamics and flame response.

Main Results:

  • Steady gas flows were generated in flames by oscillating electric fields.
  • Ion migration and recombination were identified as the driving force.
  • A model showed ion migration distance decreases with increasing frequency.
  • Flame manipulation at a distance was achieved above a critical frequency.

Conclusions:

  • Time-oscillating electric fields can induce and control gas flows in flames.
  • The frequency of the electric field is critical for effective manipulation.
  • Non-contact flame control is possible using AC electric fields above a specific frequency threshold.