2002
DOI: 10.1115/1.1383255
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Abstract: An experimental method to determine the thermoacoustic properties of a gas turbine combustor using a lean-premixed low emission swirl stabilized burner is presented. To model thermoacoustic oscillations, a combustion system can be described as a network of acoustic elements, representing for example fuel and-air supply, burner and flame, combustor, cooling channels, suitable terminations, etc. For most of these elements, simple analytical models provide an adequate description of their thermoacoustic propertie… Show more

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Cited by 158 publications
(85 citation statements)
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“…Such tools have been available in research centers but also in industry for a long time with various levels of sophistication: longitudinal low-frequency modes [4,9,10], longitudinal/azimuthal modes [11,12] fully three-dimensional acoustic modes [13,11], linear or non-linear methods [14 − 16], analytical or numerical techniques. The weakest part of these models is the description of the flame response to acoustic perturbations.…”
Section: Introductionmentioning
confidence: 99%
“…Such tools have been available in research centers but also in industry for a long time with various levels of sophistication: longitudinal low-frequency modes [4,9,10], longitudinal/azimuthal modes [11,12] fully three-dimensional acoustic modes [13,11], linear or non-linear methods [14 − 16], analytical or numerical techniques. The weakest part of these models is the description of the flame response to acoustic perturbations.…”
Section: Introductionmentioning
confidence: 99%
“…The determination of the complete scattering matrix requires two independent states of the acoustic system. According to the two source-location method described, e.g., in [42][43][44][45][46][47][48], two independent acoustic fields can be achieved by locating the acoustic forcing upstream and downstream of the configuration, respectively, in two succeeding steps (see Figure 3).…”
Section: Wave Extraction and Evaluation Of Scattering Matrixmentioning
confidence: 99%
“…Typically these test states are realized by acoustic forcing from either side in two separate experiments. More details of this method are presented in various literature [17,6,7,8,9,10]. To separate the transfer matrix of burner and flame, first the transfer matrix of the burner is measured without flame (BTM).…”
Section: Alternative Methodsmentioning
confidence: 99%
“…Because of their complexity often these functions are measured [4] or derived from more complex models which are based on experimental investigations. The fundamental method to obtain the flame transfer matrix (FTM) experimentally was proposed in [5], which was further developed into the multi microphone method (MMM) [6,7,8,9,10]. While this method allows the most general acoustical characterization of the combustor elements, e.g.…”
Section: Introductionmentioning
confidence: 99%