Development of a numerical model for the electric current in burner-stabilised methane–air flames

Speelman, N Nico; Goey, de Lph Philip; Oijen, van Ja Jeroen

doi:10.1080/13647830.2014.998712

Cited by 37 publications

(77 citation statements)

References 28 publications

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“…The flame parameters and computational setup considered here are inspired by the experimental setup for the characterization of the electrical response of burner-stabilized premixed flames in Ref. [4].…”

Section: Configuration Models and Methodsmentioning

confidence: 99%

“…An example of the i -V curve is shown in Fig. 1 for a burner-stabilized premixed methane/air flame at atmospheric pressure [4]. These curves have a strong dependence on the type of fuel, flame stoichiometry, pressure, and position of the flame with respect to the electrodes.…”

Section: Introductionmentioning

confidence: 99%

“…Since it is difficult to determine experimentally the spatial distribution of the charges, [4]. The data is taken from Figure 13 in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…[4]. In the experimental setup, the right electrode at V R consists of a metal mesh placed in the burnt gases 1 cm from the surface of a grounded heat flux burner, which serves as the left electrode at V L [4]. The area of the burner's surface is A = 7 cm 2 .…”

Section: Introductionmentioning

confidence: 99%

“…Valuable information on the ionic structure of a flame can be obtained from a detailed understanding of i -V curves [1]. i -V curves have been investigated in the combustion literature with the aim of characterizing the production rates and densities of charged species [2,3] and analyzing electric fields effect on flames [4,5]. An example of the i -V curve is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

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The i−V curve characteristics of burner-stabilized premixed flames: detailed and reduced models

Han

Belhi

Casey

et al. 2017

Proceedings of the Combustion Institute

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The i -V curve describes the current drawn from a flame as a function of the voltage difference applied across the reaction zone. Since combustion diagnostics and flame control strategies based on electric fields depend on the amount of current drawn from flames, there is significant interest in modeling and understanding i -V curves. We implement and apply a detailed model for the simulation of the production and transport of ions and electrons in one-dimensional premixed flames. An analytical reduced model is developed based on the detailed one, and analytical expressions are used to gain insight into the characteristics of the i -V curve for various flame configurations. In order for the reduced model to capture the spatial distribution of the electric field accurately, the concept of a dead zone region, where voltage is constant, is introduced, and a suitable closure for the spatial extent of the dead zone is proposed and validated. The results from the reduced modeling framework are found to be in good agreement with those from the detailed simulations. The saturation voltage is found to depend significantly on the flame location relative to the electrodes, and on the sign of the voltage difference applied. Furthermore, at sub-saturation conditions, the current is shown to increase * Corresponding author Email address: fbisetti@utexas.edu (Fabrizio Bisetti)Preprint submitted to Proceedings of the Combustion Institute July 17, 2016linearly or quadratically with the applied voltage, depending on the flame location. These limiting behaviors exhibited by the reduced model elucidate the features of i -V curves observed experimentally. The reduced model relies on the existence of a thin layer where charges are produced, corresponding to the reaction zone of a flame. Consequently, the analytical model we propose is not limited to the study of premixed flames, and may be applied easily to others configurations, e.g. nonpremixed counterflow flames.

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Section: Configuration Models and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Since it is difficult to determine experimentally the spatial distribution of the charges, [4]. The data is taken from Figure 13 in Ref.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%