Réponse d'une flamme cryogénique oxygène/hydrogène aux oscillations haute-fréquence dans un moteur-fusée

Autor: H. Kawashima, Justin Hardi, Michael Oschwald, N. Fdida, Bernhard Knapp, A. Ristori
Přispěvatelé: DMPE, ONERA, Université Paris Saclay (COmUE) [Palaiseau], ONERA-Université Paris Saclay (COmUE), Deutsches Zentrum für Luft- und Raumfahrt [Lampoldshausen] (DLR), Japan Aerospace Exploration Agency [Tsukuba] (JAXA)
Rok vydání: 2019
Předmět:
Zdroj: Progress in Propulsion Physics – Volume 11
Progress in Propulsion Physics – Volume 11, 2019, 11, pp.407-424. ⟨10.1051/eucass/201911407⟩
DOI: 10.1051/eucass/201911407
Popis: International audience; Experiments presented in this paper were conducted with the BKH rocket combustor at the European Research and Technology Test Facility P8, located at DLR Lampoldshausen. This combustor is dedicated to study the effects of high magnitude instabilities on oxygen/hydrogen flames, created by forcing high frequency (HF) acoustic resonance of the combustion chamber. This work addresses the need for highly temporally and spatially resolved visualisation data, in operating conditions representative of real rocket engines, to better understand the flame response to high amplitude acoustic oscillations. By combining Onera and DLR materials and techniques, the optical setup of this experiment has been improved to enhance the existing database with more highly resolved OH* imaging to allow detailed response analysis of the flame. OH* imaging is complemented with simultaneous visible imaging, and compared to each other here for their ability to capture flame dynamics.
Databáze: OpenAIRE
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