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High Frequency Combustion Instabilities in the Dvrc Rocket Combustor download

High Frequency Combustion Instabilities in the Dvrc Rocket Combustor download

High Frequency Combustion Instabilities in the Dvrc Rocket Combustor. Terracciano Andrea

High Frequency Combustion Instabilities in the Dvrc Rocket Combustor
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Author: Terracciano Andrea
Number of Pages: 204 pages
Published Date: 03 Jan 2015
Publisher: LAP Lambert Academic Publishing
Publication Country: United States
Language: English
Type: Pdf
ISBN: 9783659639166
File size: 38 Mb
Download Link: High Frequency Combustion Instabilities in the Dvrc Rocket Combustor
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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.

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