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Douasbin, Quentin and Gröning, Stefan and Urbano, Annafederica and Selle, Laurent and Hardi, Justin and Armbruster, Wolfgang and Oschwald, Michael (2016) Joint experimental, LES and Helmholtz analysis of self-excited combustion instabilities in a hydrogen-oxygen rocket combustor. Thermoacoustic Instabilities in Gas Turbines and Rocket Engines: Industry meets Academia, 2016, 30.05. - 01.06.2016, Munich, Germany.
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Abstract
Self-excited combustion instabilities of the first tangential mode have been observed in a research combustor operated with hydrogen and oxygen in cryogenic state as propellants. A detailed analysis of this unstable mode is conducted and the experimental observations are compared with numerical simulations. A high fidelity Large-Eddy Simulation together with an acoustic eigenmode computation performed with a Helmholtz solver give complementary information on the mechanisms driving the instability. A methodology for the 3D reconstruction of the acoustic field is presented.
| Item URL in elib: | https://elib.dlr.de/133479/ | ||||||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||
| Title: | Joint experimental, LES and Helmholtz analysis of self-excited combustion instabilities in a hydrogen-oxygen rocket combustor | ||||||||||||||||||||||||
| Authors: |
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| Date: | 2016 | ||||||||||||||||||||||||
| Refereed publication: | No | ||||||||||||||||||||||||
| Open Access: | No | ||||||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||
| Keywords: | combustion instabilities, rocket engines, hydrogen/oxygen, LES, Helmholtz solver | ||||||||||||||||||||||||
| Event Title: | Thermoacoustic Instabilities in Gas Turbines and Rocket Engines: Industry meets Academia, 2016 | ||||||||||||||||||||||||
| Event Location: | Munich, Germany | ||||||||||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||||||||||
| Event Dates: | 30.05. - 01.06.2016 | ||||||||||||||||||||||||
| 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: | 14 Jan 2020 08:44 | ||||||||||||||||||||||||
| Last Modified: | 14 Jan 2020 08:44 |
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