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Updated: Feb 26, 2026
06:42
Magnetically Induced Rotating Rayleigh-Taylor Instability
Published on: March 3, 2017
10.1K
Combustion instability mitigation by magnetic fields.
Agnes Jocher1, Heinz Pitsch1, Thomas Gomez2
1RWTH Aachen University, Institute for Combustion Technology, 52056 Aachen, Germany.
Physical Review. E
|July 16, 2017
Summary
Magnetic fields can stabilize unstable flames by influencing oxygen and reducing perturbation growth. This study explores electromagnetics and combustion interactions for flame stabilization.
Area of Science:
- Interdisciplinary study combining electromagnetics and combustion science.
- Focus on fluid dynamics and flame physics.
Background:
- Spontaneous flame instabilities pose challenges in combustion processes.
- Understanding flame behavior under external perturbations is crucial for control.
Purpose of the Study:
- To investigate the effect of magnetic perturbations on non-premixed sooting flame instability.
- To elucidate the underlying mechanisms of magnetic stabilization in flames.
Main Methods:
- Experimental setup demonstrating magnetic perturbation on a sooting flame.
- Direct numerical simulations (DNS) to reproduce and analyze the phenomenon.
- Flow stability analysis to understand the stabilization process.
Main Results:
- Observed mitigation of spontaneous flame instability under magnetic perturbation.
- Numerical simulations confirmed the stabilizing effect of the magnetic field.
- Identified momentum and thermochemistry coupling, driven by magnetic force on oxygen, as key stabilization factors.
- Spatial local stability analysis showed reduced growth rates of flame perturbations.
Conclusions:
- Magnetic fields offer a viable method for stabilizing unstable flames.
- The interaction between magnetic forces, oxygen, and flame chemistry is critical for stabilization.
- This research provides fundamental insights into controlling combustion instabilities.
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