Using dual laser vibrometry to monitor the stability of gas turbine combustion

Fabrice Giuliani, Andreas Lang, Thomas Leitgeb, Jakob Woisetschläger, Franz Heitmeir

Research output: Contribution to conference(Old data) Lecture or PresentationResearch

Abstract

Laser vibrometry (LV) is originally a laser-based measurement technique dedicated to the analysis of surface vibrations. This technique wasadapted at TU Graz as a line-of-sight measurement technique for the observation of coherent vortices in a turbulent flow, and then lately as a technique for monitoring the stability of an air-methane flame using two instruments (Dual Laser Vibrometry - DLV). This paper reports on measurements realised on a resonant flame (premixed air-methane, quarter-wave resonator, amplification with a siren). A remarkable relation between the flame dynamics, and phase-defined DLV measurements can be observed. Signal processing will be shortly described. In order to support the observations, and correlate the results with data from other measurement techniques, high-speed schlieren visualisations and stereoscopic Particle-Image-Velocimetry (PIV) were used. The paper eventually addresses issues regarding quantification (from line-of-sight to local measurement, amplitude analysis of the density fluctuations rho' and comparison with the local thermoacoustic couplings). One recommended application of DLV is its ability to perform precise and low-cost combustor benchmark stability tests (time-resolved measurement, broad frequency spectrum, no need for seeding, very high sensitivity, measurement possible over the whole combustion volume).
Original languageEnglish
Publication statusPublished - 2007
EventThird European Combustion Meeting ECM 2007 -
Duration: 11 Apr 200713 Apr 2007

Conference

ConferenceThird European Combustion Meeting ECM 2007
Period11/04/0713/04/07

Fingerprint

gas turbines
lasers
line of sight
flames
sirens
methane
stability tests
premixed flames
air
particle image velocimetry
inoculation
combustion chambers
turbulent flow
signal processing
resonators
time measurement
high speed
vortices
vibration
sensitivity

Fields of Expertise

  • Mobility & Production

Treatment code (Nähere Zuordnung)

  • Experimental

Cite this

Using dual laser vibrometry to monitor the stability of gas turbine combustion. / Giuliani, Fabrice; Lang, Andreas; Leitgeb, Thomas; Woisetschläger, Jakob; Heitmeir, Franz.

2007. Third European Combustion Meeting ECM 2007, .

Research output: Contribution to conference(Old data) Lecture or PresentationResearch

Giuliani, F, Lang, A, Leitgeb, T, Woisetschläger, J & Heitmeir, F 2007, 'Using dual laser vibrometry to monitor the stability of gas turbine combustion' Third European Combustion Meeting ECM 2007, 11/04/07 - 13/04/07, .
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title = "Using dual laser vibrometry to monitor the stability of gas turbine combustion",
abstract = "Laser vibrometry (LV) is originally a laser-based measurement technique dedicated to the analysis of surface vibrations. This technique wasadapted at TU Graz as a line-of-sight measurement technique for the observation of coherent vortices in a turbulent flow, and then lately as a technique for monitoring the stability of an air-methane flame using two instruments (Dual Laser Vibrometry - DLV). This paper reports on measurements realised on a resonant flame (premixed air-methane, quarter-wave resonator, amplification with a siren). A remarkable relation between the flame dynamics, and phase-defined DLV measurements can be observed. Signal processing will be shortly described. In order to support the observations, and correlate the results with data from other measurement techniques, high-speed schlieren visualisations and stereoscopic Particle-Image-Velocimetry (PIV) were used. The paper eventually addresses issues regarding quantification (from line-of-sight to local measurement, amplitude analysis of the density fluctuations rho' and comparison with the local thermoacoustic couplings). One recommended application of DLV is its ability to perform precise and low-cost combustor benchmark stability tests (time-resolved measurement, broad frequency spectrum, no need for seeding, very high sensitivity, measurement possible over the whole combustion volume).",
author = "Fabrice Giuliani and Andreas Lang and Thomas Leitgeb and Jakob Woisetschl{\"a}ger and Franz Heitmeir",
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T1 - Using dual laser vibrometry to monitor the stability of gas turbine combustion

AU - Giuliani, Fabrice

AU - Lang, Andreas

AU - Leitgeb, Thomas

AU - Woisetschläger, Jakob

AU - Heitmeir, Franz

PY - 2007

Y1 - 2007

N2 - Laser vibrometry (LV) is originally a laser-based measurement technique dedicated to the analysis of surface vibrations. This technique wasadapted at TU Graz as a line-of-sight measurement technique for the observation of coherent vortices in a turbulent flow, and then lately as a technique for monitoring the stability of an air-methane flame using two instruments (Dual Laser Vibrometry - DLV). This paper reports on measurements realised on a resonant flame (premixed air-methane, quarter-wave resonator, amplification with a siren). A remarkable relation between the flame dynamics, and phase-defined DLV measurements can be observed. Signal processing will be shortly described. In order to support the observations, and correlate the results with data from other measurement techniques, high-speed schlieren visualisations and stereoscopic Particle-Image-Velocimetry (PIV) were used. The paper eventually addresses issues regarding quantification (from line-of-sight to local measurement, amplitude analysis of the density fluctuations rho' and comparison with the local thermoacoustic couplings). One recommended application of DLV is its ability to perform precise and low-cost combustor benchmark stability tests (time-resolved measurement, broad frequency spectrum, no need for seeding, very high sensitivity, measurement possible over the whole combustion volume).

AB - Laser vibrometry (LV) is originally a laser-based measurement technique dedicated to the analysis of surface vibrations. This technique wasadapted at TU Graz as a line-of-sight measurement technique for the observation of coherent vortices in a turbulent flow, and then lately as a technique for monitoring the stability of an air-methane flame using two instruments (Dual Laser Vibrometry - DLV). This paper reports on measurements realised on a resonant flame (premixed air-methane, quarter-wave resonator, amplification with a siren). A remarkable relation between the flame dynamics, and phase-defined DLV measurements can be observed. Signal processing will be shortly described. In order to support the observations, and correlate the results with data from other measurement techniques, high-speed schlieren visualisations and stereoscopic Particle-Image-Velocimetry (PIV) were used. The paper eventually addresses issues regarding quantification (from line-of-sight to local measurement, amplitude analysis of the density fluctuations rho' and comparison with the local thermoacoustic couplings). One recommended application of DLV is its ability to perform precise and low-cost combustor benchmark stability tests (time-resolved measurement, broad frequency spectrum, no need for seeding, very high sensitivity, measurement possible over the whole combustion volume).

M3 - (Old data) Lecture or Presentation

ER -