The generation of resonant turbulence for a premixed burner

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Abstract

Is it possible to optimize the turbulent combustion of a low swirl burner by using resonance in turbulence? To that end an active grid is constructed that consists of two perforated disks of which one is rotating, creating a system of pulsating jets, which in the end can be used as a central blocking grid of a low swirl burner. The turbulence originating from this grid is studied by hot wire anemometry to see if there is a frequency for maximal response. Although no resonant enhancement of the turbulent kinetic energy or the dissipation rate is observed, the results for the two different sets of disks show that significant turbulent fluctuations are introduced mainly in the energy containing range and partially in the inertial sub range. These fluctuations represent up to 25% of the total turbulent energy and are not caused by pulsations of the mean flow.
Original languageEnglish
Title of host publicationProceedings of the 9th international ERCOFTAC Symposium on Engineering Turbulence Modeling and Measurements,ETMM 2012 (USB)
Place of PublicationThessaloniki, Greece
PublisherEuropean Research Community on Flow Turbulence and Combustion (ERCOFTAC)
Pages-
Number of pages6
Publication statusPublished - 6 Jun 2012
Event9th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements, ETMM 2012 - Macedonia Palace Hotel, Thessaloniki, Greece
Duration: 6 Jun 20128 Jun 2012
Conference number: 9

Publication series

Name
PublisherEuropean Research Community on Flow Turbulence and Combustion (ERCOFTAC)

Conference

Conference9th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements, ETMM 2012
Abbreviated titleETMM
CountryGreece
CityThessaloniki
Period6/06/128/06/12

Keywords

  • METIS-293717
  • IR-80622

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