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Application of an Aerothermal Model for Effusion Cooling Systems and Finite Rate Chemistry in Aeroengine Combustors

Aumeier, Thomas and Behrendt, Thomas (2015) Application of an Aerothermal Model for Effusion Cooling Systems and Finite Rate Chemistry in Aeroengine Combustors. Begell House Inc.. ISBN 978-1-56700-427-4. ISSN 2377-2816

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Official URL: http://thmt-15.org

Abstract

Effusion cooling is an advanced cooling concept for modern aeroengine combustors and offers a very stable convective coolant film along the wall combined with heat removal inside each hole. In order to find the best positions of the cooling holes, CFD calculations with conjugate heat transfer can be done to predict wall temperature distributions. An extensive CFD simulation with local grid refinement is required to evaluate near wall phenomena. A combustor with complex effusion hole pattern leads to large computational meshes for both the fluid and the solid increasing the computational costs. A helpful approach to speed up calculations is to replace the cooling holes by a set of new in- and outflow boundary conditions for virtual effusion holes. Computational costs and time for the design process can be saved. In the paper the cooling concept of a combustor liner with 368 virtual cooling holes is shown and the influence of the combustion near the wall is investigated. The combustion model used allows to account for kinetic effects in the near wall region.

Item URL in elib:https://elib.dlr.de/65599/
Document Type:Proceedings
Title:Application of an Aerothermal Model for Effusion Cooling Systems and Finite Rate Chemistry in Aeroengine Combustors
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Aumeier, Thomasthomas.aumeier (at) dlr.deUNSPECIFIED
Behrendt, Thomasthomas.behrendt (at) dlr.deUNSPECIFIED
Date:September 2015
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:8
Page Range:pp. 895-898
Editors:
EditorsEmail
Hanjalic, K.UNSPECIFIED
Hadziabdic, M.UNSPECIFIED
Venturini, P.UNSPECIFIED
Miyauchi, T.UNSPECIFIED
Borello, D.UNSPECIFIED
Publisher:Begell House Inc.
ISSN:2377-2816
ISBN:978-1-56700-427-4
Status:Published
Keywords:effusion cooling, modelling, chemical kinetics, combustor
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 - Combusion Chamber Technologies (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Combustor
Deposited By: Aumeier, Thomas
Deposited On:16 Nov 2015 09:18
Last Modified:31 Jul 2019 19:28

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