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Related Experiment Videos

Fingering instability in combustion: an extended view.

O Zik1, E Moses

  • 1Department of Physics of Complex Systems, The Weizmann Institute of Science, Rehovot 76100, Israel.

Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
|April 24, 2002
PubMed
Summary

Fingering instability in solid fuel combustion is explored, revealing its connection to oxygen depletion and heat loss. This phenomenon shares a model with electrochemical deposition, offering broader insights.

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Area of Science:

  • Combustion Science
  • Fluid Dynamics
  • Materials Science

Background:

  • Fingering instability occurs when solid fuel burns against an oxidizing wind.
  • This instability is observed below the critical Rayleigh number for convection.
  • The study focuses on the developed fingering state.

Purpose of the Study:

  • To detail the experimental setup for studying fingering instability.
  • To present direct measurements of oxygen depletion by the combustion front.
  • To investigate the relationship between heat losses and the instability's characteristic scale.

Main Methods:

  • Experimental investigation of solid fuel combustion against an oxidizing wind.
  • Direct measurement of oxygen depletion.

Related Experiment Videos

  • Analysis of heat loss effects on instability scale.

    • Main Results:

    • Quantified oxygen depletion by the combustion front.
    • Established a link between heat losses and the characteristic scale of fingering.
    • Demonstrated that a single phenomenological model applies to both combustion instability and electrochemical deposition.

    Conclusions:

    • The fingering instability in solid fuel combustion is characterized by oxygen depletion and influenced by heat losses.
    • A unified model explains this instability and processes in electrochemical deposition.
    • Provides a deeper understanding of combustion instabilities and their broader applicability.