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Related Experiment Video

Updated: May 13, 2026

Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes

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Published on: May 26, 2014

Accelerative propagation and explosion triggering by expanding turbulent premixed flames.

V'yacheslav Akkerman¹, Swetaprovo Chaudhuri, Chung K Law

¹Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, West Virginia 26506-6106, USA. Vyacheslav.Akkerman@mail.wvu.edu

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|March 19, 2013

Summary

Accelerating turbulent premixed flames propagate via a power law, significantly increasing detonation triggering potential in turbulent environments. Hydrodynamic instability further enhances this acceleration at larger scales.

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Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer

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Published on: February 19, 2018

Area of Science:

* Combustion Science
* Fluid Dynamics
* Chemical Engineering

Background:

* Analysis of outwardly propagating, accelerating turbulent premixed flames.
* Investigation of flame acceleration's role in explosion triggering.
* Examination of flame dynamics and morphology.

Purpose of the Study:

* To analyze the dynamics and morphology of accelerating turbulent premixed flames.
* To determine the effect of flame acceleration on explosion triggering.
* To investigate flame propagation in externally forced, near-isotropic turbulent environments.

Main Methods:

* Guided by recent theoretical results.
* Substantiated by experimental data.
* Analysis of power-law propagation based on average global flame radius.

Main Results:

* Accelerating flame front propagation follows a well-defined power law.
* The power-law exponent is substantially larger than for cellular laminar flames.
* Effective turbulence intensity experienced by the flame is derived.

Conclusions:

* Turbulent environments significantly facilitate detonation triggering.
* Hydrodynamic instability enhances flame acceleration at large scales.
* Findings support the potential for detonation triggering in turbulent combustion.