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Updated: Aug 11, 2026
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Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes
Published on: May 26, 2014
Pseudoresonant interaction between flame and upstream velocity fluctuations
1University of Central Lancashire, Preston PR1 2HE, UK. VKarlin@uclan.ac.uk
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|February 21, 2006
Summary
Upstream velocity fluctuations significantly impact flame propagation speed. The Sivashinsky model reveals how flame perturbations can be amplified to control flame dynamics.
Area of Science:
- Combustion science
- Fluid dynamics
- Nonlinear dynamics
Background:
- Flame propagation is crucial in many applications.
- Hydrodynamically unstable flames exhibit complex dynamics.
- Understanding upstream velocity effects is key to controlling combustion.
Purpose of the Study:
- To analyze the effect of upstream velocity fluctuations on flame propagation speed.
- To model flame front dynamics using identified perturbations.
- To explore methods for controlling flame propagation speed.
Main Methods:
- Utilized the Sivashinsky model for flame cellularization.
- Investigated hydrodynamically unstable flame fronts.
- Identified and analyzed flame perturbations with significant amplification potential.
Main Results:
- Discovered specific flame perturbations amplified over finite time scales.
- Modeled the influence of upstream velocity fluctuations on flame front dynamics.
- Demonstrated a potential mechanism for controlling flame propagation speed.
Conclusions:
- Upstream velocity fluctuations play a critical role in flame dynamics.
- The Sivashinsky model provides insights into flame behavior.
- Perturbation amplification offers a pathway to flame speed control.
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