Flow field characteristics and particle path tracking of a hollow rotating detonation engine with a Laval nozzle

نویسندگان

چکیده

A statistical particle path tracking method is applied to a hollow rotating detonation engine (RDE) with Laval nozzle, and the flow field characteristics are investigated. The in-house solver BYRFoam based on OpenFOAM used, large-area outflow at tail of combustor an array injection holes implemented. influence mechanism nozzle internal external fields RDE revealed. results confirm that helps suppress shock wave field, which can make exhaust plume structure more symmetrical. influencing factors studied. show farther equivalence ratio deviates from 1, closer normal outlet. paths representative particles tracked, physical properties different areas obtained compared. demonstrate overall movement trend along circumferential direction opposite wave, some entering inner hole enter virtual cylinder. without radial deflection angle smaller for larger compared axial injection. large number proposed obtain gas in combustor. average residence time its dispersion degree than outer gas. Flow initial position coordinates produce curved traces. thermodynamic concept maximum work–heat used analyze macroscopic cycle reveal net mechanical work those particles. has greater proportion chemical energy converted into useful better expansion effect.

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ژورنال

عنوان ژورنال: Physics of Fluids

سال: 2023

ISSN: ['1527-2435', '1089-7666', '1070-6631']

DOI: https://doi.org/10.1063/5.0144651