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Inner liner temperature variation caused deformation localization effects in a multichannel model of a generic LRE wall structure

Riccius, Jörg and Zametaev, E. and Bouajila, W. and Wargnier, Q. (2014) Inner liner temperature variation caused deformation localization effects in a multichannel model of a generic LRE wall structure. AIAA Propulsion and Energy 2014, 28. - 30. Jul. 2014, Cleveland, OH, USA.

Full text not available from this repository.

Abstract

The inner liner of a regeneratively cooled wall of a main stage rocket combustion chamber is extremely loaded by the high temperature of the hot gas and the pressure difference between the coolant and the hot gas. A cyclic operation of such a chamber usually causes a LFC failure of the wall structure after a very low number of cycles. The development and flight qualification of such components includes on top of many other actions thermal, structural and fatigue life analyses of chamber wall structures. Often, these analyses are based on half cooling channel + half fin Finite Element models of a tiny chamber wall section with symmetry conditions at the centerline of the cooling channel and the centerline of the fin. However, injector vicinity caused chamber wall temperature variations in circumferential direction of the chamber wall may cause localization effects of the deformation of the inner liner of chamber wall structures. Exemplary, an injector vicinity caused 20 K wall temperature variation is taken into account by a three-channel model. The influence of this variation to the distribution of the circumferential strain distribution as well as to the post processing determined fatigue life is shown.

Item URL in elib:https://elib.dlr.de/92878/
Document Type:Conference or Workshop Item (Speech)
Title:Inner liner temperature variation caused deformation localization effects in a multichannel model of a generic LRE wall structure
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Riccius, JörgJoerg.Riccius (at) dlr.deUNSPECIFIED
Zametaev, E.Evgeny.Zametaev (at) dlr.deUNSPECIFIED
Bouajila, W.Wissam.Bouajila (at) dlr.deUNSPECIFIED
Wargnier, Q.Supmeca Paris, FranceUNSPECIFIED
Date:2014
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:rocket combustion, wall structure
Event Title:AIAA Propulsion and Energy 2014
Event Location:Cleveland, OH, USA
Event Type:international Conference
Event Dates:28. - 30. Jul. 2014
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Antriebsystemtechnik - Schubkammertechnologie
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Rocket Propulsion
Deposited By: Hanke, Michaela
Deposited On:02 Dec 2014 10:02
Last Modified:01 Dec 2018 19:50

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