Dynamical Mode Recognition of Triple Flickering Buoyant Diffusion Flames: from Physical Space to Phase Space and to Wasserstein Space

Abstract

Triple flickering buoyant diffusion flames in an isosceles triangle arrangement were experimentally studied as a nonlinear dynamical system of coupled oscillators. The objective of the study is two-fold: to establish a well-controlled gas-fuel diffusion flame experiment that can remedy the deficiencies of previous candle-flame experiments, and to develop an objective methodology for dynamical mode recognition that is based on the Wasserstein distance between distribution functions of phase points and can be readily generalized to larger dynamical system consisting of more than three flames. By using the present experiment and methodology, we recognized seven distinct stable dynamical modes, such as in-phase mode, flickering death mode, partial flickering death mode, partial in-phase mode, rotation mode, partial decoupled mode, and decoupled mode. These results generalize the literature results for triple flickering flame system in a straight-line and equal-lateral triangle arrangement. The identification or discrimination of two dynamical modes can be quantified as the small or large Wasserstein distance, respectively.

16 pages, 5 figures, 1 table, research article

References in corpus (4)

• Diffusion-flame flickering as a hydrodynamic global mode
• Flickering candle flames and their collective behavior
• Dynamical Mode Recognition of Triple Flickering Buoyant Diffusion Flames: from Physical Space to Phase Space and to Wasserstein Space
• Oscillation and collective behavior in convective flows

Cited by in corpus (8)

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• Dynamical Mode Recognition of Coupled Flame Oscillators by Supervised and Unsupervised Learning Approaches
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• Stabilization Analysis and Mode Recognition of Kerosene Supersonic Combustion: A Deep Learning Approach Based on Res-CNN-beta-VAE
• Dimensionality Reduction and Dynamical Mode Recognition of Circular Arrays of Flame Oscillators Using Deep Neural Network
• A Comprehensive Regime Diagram of Dynamical Modes of Triple Flickering Buoyant Diffusion Flames: Experimental and Model Investigations