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Temperature Measurements at the Outlet of a Lean Burn Single Sector Combustor by Laser-Optical Methods

Doll, Ulrich and Stockhausen, Guido and Heinze, Johannes and Meier, Ulrich and Hassa, Christoph and Bagchi, Imon-Kalyan (2016) Temperature Measurements at the Outlet of a Lean Burn Single Sector Combustor by Laser-Optical Methods. Journal of Engineering for Gas Turbines and Power, 139 (2), 021507-021507. American Society of Mechanical Engineers (ASME). DOI: 10.1115/1.4034355 ISSN 0742-4795

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Official URL: http://dx.doi.org/10.1115/1.4034355

Abstract

High OPR engine cycles for reduced NOx emissions will generate new aggravated requirements and boundary conditions by implementing low emission combustion technologies into advanced engine architectures. Lean burn combustion systems will have a significant impact on the temperature and velocity traverse at the combustor exit. With the transition to high pressure engines it is essential to fully understand and determine the high energetic interface between combustor and turbine to avoid excessive cooling. Spatially resolved temperatures were measured at different operating conditions using planar laser-induced fluorescence of OH (OH-PLIF) and Filtered Rayleigh Scattering (FRS), the latter being used in a combustor environment for the first time. Apart from a conventional signal detection arrangement, FRS was also applied with an endoscope for signal collection, to assess its feasibility for future application in a full annular combustor with restricted optical access. Both techniques are complementary in several respects, which justified their combined application. OH-PLIF allows instantaneous measurements and therefore enables local temperature statistics, but is limited to relatively high temperatures. On the other hand FRS can also be applied at low temperatures, which makes it particularly attractive for measurements in cooling layers. However, FRS requires long sampling times and therefore can only provide temporal averages. When applied in combination, the accuracy of both techniques could be improved by each method helping to overcome the other's shortcomings.

Item URL in elib:https://elib.dlr.de/105862/
Document Type:Article
Title:Temperature Measurements at the Outlet of a Lean Burn Single Sector Combustor by Laser-Optical Methods
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Doll, Ulrichulrich.doll (at) dlr.deUNSPECIFIED
Stockhausen, Guidoguido.stockhausen (at) dlr.deUNSPECIFIED
Heinze, Johannesjohannes.heinze (at) dlr.deUNSPECIFIED
Meier, Ulrichulrich.meier (at) dlr.deUNSPECIFIED
Hassa, Christophchristoph.hassa (at) dlr.deUNSPECIFIED
Bagchi, Imon-KalyanRolls-Royce DeutschlandUNSPECIFIED
Date:20 September 2016
Journal or Publication Title:Journal of Engineering for Gas Turbines and Power
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:139
DOI :10.1115/1.4034355
Page Range:021507-021507
Publisher:American Society of Mechanical Engineers (ASME)
ISSN:0742-4795
Status:Published
Keywords:Combustion chambers , Lasers , Temperature measurement , Engines , Temperature , Cooling , Signals , Emissions , High temperature , Combustion Technologies, filtered Rayleigh scattering, OH planar laser induced fluorescence
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation methods
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Engine Measurement Systems
Institute of Propulsion Technology > Combustor
Deposited By: Doll, Ulrich
Deposited On:20 Dec 2016 11:37
Last Modified:08 Mar 2018 18:42

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