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Chemiluminescence and DGV measurements on a premixed industrial burner for gas turbines

Heinze, Johannes and Fischer, Michael and Sadanandan, Rajesh and Stockhausen, Guido and Diers, Olaf and Müller, Martin (2006) Chemiluminescence and DGV measurements on a premixed industrial burner for gas turbines. Measurement and Observation Techniques for Aerospace Research (MOTAR), 2006-04-06 - 2006-04-07, Berlin.

Full text not available from this repository.

Abstract

It is shown that DGV and CH chemiluminescence measurements can be easily combined. By changing one interference filter, using one of the DGV cameras and the DGV optical probe for the visible spectral range CH chemiluminescence measurements are performed with the same optical set up. Even though the CH chemiluminescence intensity is more sensitive to the stoichiometry compared to OH chemiluminescence it gives a time and cost saving volumetric overview on the variation in time of the local heat formation. An application example demonstrates the capability of visualizing the overall flame structure to assure the correct flame symmetry before applying more cost-intensive techniques. Using a standard PC sound card, the microphone signal from the combustor and the camera trigger are recorded allowing a comparison of burner conditions in matters of combustion oscillation frequency, frequency stability and microphone signal amplitude stability over a time period. Probably as a consequence of an asymmetry in the gas supply the studied flame of the test burner showed an asymmetric heat formation and unstable oscillation frequencies. The flame asymmetry was verified also by OH chemiluminescence measurements. Due to the trigger instability it was impossible to realize phase resolved velocity measurements with the standard set up for DGV in flames. Nevertheless time averaged velocity measurements of the flow field were performed which showed in contrast to the chemiluminescence results highly symmetric velocity fields. The signal to background scattering intensity ratio of the DGV set up was improved by the use of black exhaust colour for surface stray light reduction and a water cooled light trap.

Document Type:Conference or Workshop Item (Speech)
Title:Chemiluminescence and DGV measurements on a premixed industrial burner for gas turbines
Authors:
AuthorsInstitution or Email of Authors
Heinze, JohannesUNSPECIFIED
Fischer, MichaelUNSPECIFIED
Sadanandan, RajeshUNSPECIFIED
Stockhausen, GuidoUNSPECIFIED
Diers, OlafUNSPECIFIED
Müller, MartinUNSPECIFIED
Date:6 April 2006
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
DLR, UNSPECIFIED
Status:Published
Keywords:LIF, chemiluminescence, DGV, combustion oscillation, gas turbine combustor
Event Title:Measurement and Observation Techniques for Aerospace Research (MOTAR)
Event Location:Berlin
Event Type:international Conference
Event Dates:2006-04-06 - 2006-04-07
Organizer:DLR
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Quiet Air Traffic (old)
Location: Köln-Porz , Stuttgart
Institutes and Institutions:Institute of Combustion Technology > Combustion Diagnostícs
Institute of Propulsion Technology > Combustor > Combustion Physics
Institute of Propulsion Technology > Engine Measurement Systems
Deposited By: Dr.rer.nat. Johannes Heinze
Deposited On:11 Aug 2006
Last Modified:27 Apr 2009 13:01

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