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Development and application of a pre-design tool for aero-engine combustors

Tietz, Sebastian and Behrendt, Thomas (2011) Development and application of a pre-design tool for aero-engine combustors. CEAS Aeronautical Journal (Volume 2, Issue 1), pp. 111-123. Springer. doi: 10.1007/s13272-011-0012-x. ISSN 1869-5582.

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Official URL: http://www.springerlink.com/content/dr2rt07366h43727/


A software tool was developed to design aero engine combustors on a preliminary level with a small number of input parameters. This tool is capable to design conventional as well as lean combustors and to choose between four different cooling concepts. During the design calculation the combustor 2D-contour, the geometry of the desired cooling concept and the air distribution within the combustor are optimized at the take-off condition. Optimization targets are to reach minimal cooling air consumption with respect to the material temperature limits and to reach a homogeneous wall temperature as well as a stable combustion. Furthermore in the case of a staged burner the air and fuel fractions are optimized regarding minimal NOx emissions (qualitative) during take-off. Off-design calculations can be conducted for engine conditions apart from take-off to calculate the altered conditions within the combustor and to check the boundary conditions during part load. The first part of this paper shows the design and off-design process in detail and in the second part application examples are presented. In the application part three different lean combustors are designed and compared to each other. The demonstrated results show the trade-off between the reduction of NOx emissions on one hand and the reduction of fuel consumption on the other hand. Furthermore off-design calculations are performed on a conventional combustor to identify potential cooling issues during part load. The results show the capabilities of the tool to pre-design conventional as well as lean combustors.

Item URL in elib:https://elib.dlr.de/71356/
Document Type:Article
Additional Information:ISSN electronic edition: 1869-5590
Title:Development and application of a pre-design tool for aero-engine combustors
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Behrendt, ThomasUNSPECIFIEDhttps://orcid.org/0000-0002-4154-3277UNSPECIFIED
Date:26 November 2011
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 111-123
Keywords:Aero engine, Gas turbine, Combustor, Preliminary design, Effusion cooling
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Combustion Chamber Technologies (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Combustor
Deposited By: Tietz, Sebastian
Deposited On:05 Dec 2011 13:05
Last Modified:28 Mar 2023 23:39

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