Ce travail expérimental concerne les études des instabilités de combustion à haute fréquence à l'intérieur du DVRC (Discretely Variable Resonance Combustor), un moteur de fusée liquide, développé par l'Université Purdue aux laboratoires M. J. Zucrow, pour le compte du Nasa Marshall Space Flight Center. La recherche a révélé que, compte tenu de ces conditions d'écoulement spécifiques, l'instabilité de la combustion se produit à l'intérieur du système lors des tests de feu chaud. Le résultat expérimental le plus important de l'étude a montré que le collecteur d'oxydant agissait comme un amortisseur des oscillations de pression provenant de la chambre de combustion et comment cela peut représenter un avantage en termes de réduction des charges mécaniques à l'interface avec le reste du système d'alimentation. Le code LEE basé sur les équations linéarisées d'Euler a détecté à la fois l'instabilité de combustion à l'intérieur du DVRC et confirmé le rôle positif du collecteur d'oxydant. Le meilleur accord avec les résultats expérimentaux a été observé en considérant l'ajout de chaleur au plan d'injection de gaz propulseur dans la chambre de combustion, montrant qu'il est raisonnable de supposer que la combustion se produit principalement à proximité de ce plan, comme les travaux précédents sur les résultats CVRC et CFD l'avaient déjà montré.
Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.
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Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This experimental work regards the studies of the high frequency combustion instabilities inside the DVRC (Discretely Variable Resonance Combustor), a liquid rocket engine, developed by the Purdue University at M. J. Zucrow Laboratories, on behalf of Nasa Marshall Space Flight Center. The research revealed that, given these specific flow conditions, combustion instability occurs inside the system during hot fire tests. The most important experimental result of the study showed the oxidizer manifold acting as a damper of the pressure oscillations coming from the combustion chamber and how this can represent an advantage in terms of reduced mechanical loads at the interface with the rest of the feed system. The LEE code based on the linearized Euler equations detected both the combustion instability inside the DVRC and confirmed the positive role of the oxidizer manifold. The best agreement with the experimental results has been observed considering heat addition at the plane of propellants injection into the combustion chamber, showing it is reasonable to assume combustion occurs mainly in proximity of that plane, as the previous works about CVRC and CFD results had already shown. 204 pp. Englisch. N° de réf. du vendeur 9783659639166
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Taschenbuch. Etat : Neu. High Frequency Combustion Instabilities in the DVRC Rocket Combustor | Experimental Study of Combustion Instabilities in a Liquid Rocket Engine | Andrea Terracciano | Taschenbuch | 204 S. | Englisch | 2015 | LAP LAMBERT Academic Publishing | EAN 9783659639166 | Verantwortliche Person für die EU: BoD - Books on Demand, In de Tarpen 42, 22848 Norderstedt, info[at]bod[dot]de | Anbieter: preigu. N° de réf. du vendeur 104942132
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Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware -This experimental work regards the studies of the high frequency combustion instabilities inside the DVRC (Discretely Variable Resonance Combustor), a liquid rocket engine, developed by the Purdue University at M. J. Zucrow Laboratories, on behalf of Nasa Marshall Space Flight Center. The research revealed that, given these specific flow conditions, combustion instability occurs inside the system during hot fire tests. The most important experimental result of the study showed the oxidizer manifold acting as a damper of the pressure oscillations coming from the combustion chamber and how this can represent an advantage in terms of reduced mechanical loads at the interface with the rest of the feed system. The LEE code based on the linearized Euler equations detected both the combustion instability inside the DVRC and confirmed the positive role of the oxidizer manifold. The best agreement with the experimental results has been observed considering heat addition at the plane of propellants injection into the combustion chamber, showing it is reasonable to assume combustion occurs mainly in proximity of that plane, as the previous works about CVRC and CFD results had already shown.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 204 pp. Englisch. N° de réf. du vendeur 9783659639166
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Taschenbuch. Etat : Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - This experimental work regards the studies of the high frequency combustion instabilities inside the DVRC (Discretely Variable Resonance Combustor), a liquid rocket engine, developed by the Purdue University at M. J. Zucrow Laboratories, on behalf of Nasa Marshall Space Flight Center. The research revealed that, given these specific flow conditions, combustion instability occurs inside the system during hot fire tests. The most important experimental result of the study showed the oxidizer manifold acting as a damper of the pressure oscillations coming from the combustion chamber and how this can represent an advantage in terms of reduced mechanical loads at the interface with the rest of the feed system. The LEE code based on the linearized Euler equations detected both the combustion instability inside the DVRC and confirmed the positive role of the oxidizer manifold. The best agreement with the experimental results has been observed considering heat addition at the plane of propellants injection into the combustion chamber, showing it is reasonable to assume combustion occurs mainly in proximity of that plane, as the previous works about CVRC and CFD results had already shown. N° de réf. du vendeur 9783659639166
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