Influence of DC electric field on thermo-acoustic transfer function of multiple bunsen-type flames

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Abstract

In this work we continue our experimental research aimed at assessment of the applicability of an electric field (EF) for suppression of acoustic oscillations in combustion. We have already shown that the application of a DC EF of positive polarity leads to a noticeable change in thermoacoustic flame transfer function (TF) in the case of flat CH4/air laminar flames. This paper deals with flames of another type - multiple Bunsen flames. The effect of the DC EF was studied for a range of burner and flame parameters. The obtained results show that the DC EF can be used to modify TF of multiple Bunsen-type flames. The main effect observed is a change in a slope of the TF phase. However, the influence of the EF, depends on flame anchoring. The maximal effect is observed for lifted flames. Changes in the phase of the flame TF correlates well with corresponding changes in the flame height.

Original languageEnglish
Title of host publication17th International Congress on Sound and Vibration 2010, ICSV 2010
Pages934-941
Number of pages8
Publication statusPublished - 1 Dec 2010
Event17th International Congress on Sound and Vibration 2010, ICSV 2010 - Cairo, Egypt
Duration: 18 Jul 201022 Jul 2010

Conference

Conference17th International Congress on Sound and Vibration 2010, ICSV 2010
CountryEgypt
CityCairo
Period18/07/1022/07/10

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