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A first step into the blanching modelling of Liquid Rocket Engines: taking into account the roughness increase of the chamber wall

Riccius, Joerg and Böttcher, Micha Wilhelm and Duval, Hugo (2019) A first step into the blanching modelling of Liquid Rocket Engines: taking into account the roughness increase of the chamber wall. In: AIAA Propulsion and Energy 2019 Forum. AIAA Propulsion and Energy 2019 Forum, 19. - 22. Aug. 2019, Indianapolis, IN, USA. DOI: 10.2514/6.2019-3941

Full text not available from this repository.

Official URL: https://arc.aiaa.org/doi/10.2514/6.2019-3941

Abstract

Whereas pure oxidation of a copper based liquid rocket combustion chamber wall results (due to the brown color of copper oxide) in a darkening of the hot-gas side of this chamber wall, blanching (on the contrary) leads to a lighter color. This is a result of a cyclic oxidation and reduction of the chamber wall material. The most important influence of blanching is the roughness increase of the chamber wall. The strong effect of this roughness increase is exemplarily considered for the main combustion chamber of a 10 MPa chamber pressure, 1 MN vacuum thrust reference engine. A thermally fully coupled CFD analysis of the hot-gas flow and thermal FE analysis of the heat conduction in the chamber wall and CFD analysis of the coolant flow is applied to a chamber wall model of this reference engine. By running this analysis for both: initial (small) roughness as well as blanching-caused (strongly increased) roughness, the severe thermal influence of blanching can be assessed. Finally, the blanching-caused decrease of the fatigue life of the chamber wall of the reference engine is shown.

Item URL in elib:https://elib.dlr.de/133366/
Document Type:Conference or Workshop Item (Speech)
Title:A first step into the blanching modelling of Liquid Rocket Engines: taking into account the roughness increase of the chamber wall
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Riccius, JoergJoerg.Riccius (at) dlr.dehttps://orcid.org/0000-0002-5935-874X
Böttcher, Micha WilhelmDLR, Institut für Raumfahrtantriebe, Lampoldshausen, DUNSPECIFIED
Duval, HugoRenault Tech, Heudebouville, FUNSPECIFIED
Date:2019
Journal or Publication Title:AIAA Propulsion and Energy 2019 Forum
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.2514/6.2019-3941
Status:Published
Keywords:liquid rocket engine, chamber wall, blanching
Event Title:AIAA Propulsion and Energy 2019 Forum
Event Location:Indianapolis, IN, USA
Event Type:international Conference
Event Dates:19. - 22. Aug. 2019
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):Proj RLV-Schlüsseltechnologien
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Rocket Propulsion
Deposited By: Hanke, Michaela
Deposited On:10 Jan 2020 08:50
Last Modified:10 Jan 2020 08:50

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