A conceptional approach for the prediction of thermoacoustic stability in rocket engines

M. Schulze, M. Schmid, D. Morgenweck, S. Köglmeier, T. Sattelmayer

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

Abstract

A methodology to predict thermoacoustic stability in rocket engines is presented. It is based on a divide and conquer principle. The central elements, consisting of the combustion chamber and the nozzle are calculated together directly by a hybrid approach using an extended version of the DLR’s acoustic solver PIANO. Beside these central elements, the different components affecting the overall thermoacoustic stability are simulated separately and their properties are lumped into an adequate mathematical description, which is then integrated into PIANO. Each component is analyzed and optimized in its individual environment to reduce the complexity of the interaction processes, which govern thermoacoustics. The challenging step however is the incorporation of all components into a complete stability analysis and thereby keep the computational cost within reasonable limits to make this approach attractive for industrial purposes. In this report the fundamental approach is explained as well as the different components are described by means of their relevance for thermoacoustics and used modelling approaches are shown. Finally the strengths of the approach are confronted with its disadvantages. Especially its realizability and future prospects are discussed.

OriginalspracheEnglisch
Titel49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference
Herausgeber (Verlag)American Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624102226
DOIs
PublikationsstatusVeröffentlicht - 2013
Veranstaltung49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, JPC 2013 - San Jose, USA/Vereinigte Staaten
Dauer: 14 Juli 201317 Juli 2013

Publikationsreihe

Name49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference
Band1 PartF

Konferenz

Konferenz49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, JPC 2013
Land/GebietUSA/Vereinigte Staaten
OrtSan Jose
Zeitraum14/07/1317/07/13

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