Progress on combined optic-acoustic monitoring of combustion in a gas turbine: GT2020-16007

Lukas Andracher, Fabrice Giuliani, Nina Paulitsch, Vanessa Moosbrugger

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandForschungBegutachtung


The need for better combustion monitoring in gas turbines
has become more acute with the latest technical requirements,
standards, and policies in terms of safety, environment, efficiency,
operation flexibility and operation costs. This paper reports
on a concept for gas turbine combustion monitoring using
multiple probes that combine optical and acoustical measurements.
The motivation of the project is twofold. On the one side,
one wants to exploit the radiative feature of the flame and transform
it into a piece of reliable information about the combustion
status. On the other side, this information can be useful in terms
of data interpretation or data reconciliation with other information
coming from further sensors such as temperature probes,
fast pressure probes or accelerometers. For this purpose, a set
of multiple Rayleigh Criterion Probes (RCPs) combining optical
and acoustical sensors is used. Detailed information about the
RCP can be found in paper GT2017-63626, [1]. The focus is
put on the detection of the flame, on the monitoring of the ignition
process, on the quality assessment of combustion based on
its spectral contents (including soot formation) and on the detection
of possible combustion instabilities. The novel test rig
used for validation of this advanced combustion monitoring concept
is introduced, and minimal instrumentation including three
probes is recommended. The split in red, green and blue (RGB)
light components and their further analysis allows mapping the different types of operation. Solutions are proposed to bring the
optical interface as near as possible to the flame and make it operational
and reliable despite prevailing heat. The paper closes
with a description of the ongoing tests on a pressurised combustion
facility, and a sketch for a 3-RCPs based compact combustion
monitoring system. The advantages of selected chromatic
spectral bands are discussed, as well as the remaining challenges
towards a full demonstration.
TitelProceedings of ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition
Herausgeber (Verlag)American Society of Mechanical Engineers(ASME)
PublikationsstatusVeröffentlicht - 22 Jun 2020
Extern publiziertJa
VeranstaltungASME Turbo Expo 2020: Turbomachinery Technical Conference & Exhibition - London, Großbritannien / Vereinigtes Königreich
Dauer: 22 Jun 202026 Jun 2020


KonferenzASME Turbo Expo 2020
LandGroßbritannien / Vereinigtes Königreich


  • combustion monitoring
  • combustion instabilities
  • ignition success
  • soot detection

Dieses zitieren

Andracher, L., Giuliani, F., Paulitsch, N., & Moosbrugger, V. (2020). Progress on combined optic-acoustic monitoring of combustion in a gas turbine: GT2020-16007. in Proceedings of ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition [GT2020-16007] American Society of Mechanical Engineers(ASME).