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Experimental study of cooling solution for rotating detonation combustors
Improving the efficiency of gas turbines is of paramount importance. One promising approach is the implementation of Pressure Gain Combustion (PGC) technologies, among which the Rotating Detonation Combustor (RDC) has attracted significant attention. However, numerous challenges impede its integration into gas turbines, and the thermal management of ...
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Rotating detonation combustors and their similarities to rocket instabilities
Progress in Energy and Combustion Science, 2019Abstract Rotating detonation combustors (RDC) are at the forefront of pressure gain combustion (PGC) research, utilizing one or more azimuthally spinning detonation waves, an intrinsically unsteady process, to effect a stagnation pressure rise across the device. The prospective step-increase in efficiency, simplicity of design without the requirement
Vijay Anand, Ephraim Gutmark
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Rotating Detonations in Hollow and Flow-Through Combustors
AIAA Journal, 2023This paper focuses on rotating detonation combustor (RDC) experiments involving two configurations, a hollow and flow-through RDC, using hydrogen–air and ethylene–air mixtures. Two air injection areas with gaps of 1.778 and 3.81 mm were used at different air mass flow rates of 0.2, 0.3, 0.4, and 0.5 kg/s and equivalence ratios from 0.6 to 2 in 0.2 ...
Rachel Wiggins +6 more
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Hollow Rotating Detonation Combustor
54th AIAA Aerospace Sciences Meeting, 2016A continuous, azimuthally rotating, detonation wave propagating between the confines of a narrow annulus has been the essence of the Rotating Detonation Combustor (RDC) mechanics, till date. This research, however, focuses on the incipient RDC concept that utilizes a hollow combustor for the sustained rotating detonation, instead of the conventional ...
Vijay Anand +2 more
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Longitudinal pulsed detonation instability in a rotating detonation combustor
Experimental Thermal and Fluid Science, 2016Abstract The peculiar phenomenon of longitudinal pulsed detonation (LPD) in a rotating detonation combustor (RDC) is studied using hydrogen–air mixtures, by utilizing: (i) two air injection schemes having different inlet areas, and (ii) a convergent nozzle assembly with different spacers that affixes to the RDC exit.
Vijay Anand +3 more
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Secondary shock wave in rotating detonation combustor
Aerospace Science and Technology, 2019Abstract The secondary shock wave in rotating detonation combustor is studied by the combination of numerical simulation and experiments. Based on the pseudo-nozzle flow in the post-detonation zone, the influencing factors which cause the existence of secondary shock wave are clarified and then verified by experiments.
Li Deng +3 more
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Experimental study of perforated-wall rotating detonation combustors
Combustion and Flame, 2020Abstract Perforated walls are potentially applied in rotating detonation combustors (RDCs) to stabilize combustion and perform transpiration cooling. This study involves an experimental investigation on the rotating detonation in perforated-wall combustors for the first time.
Haocheng Wen, Bing Wang
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A hollow combustor that intensifies rotating detonation
Aerospace Science and Technology, 2019Abstract Annular combustors are traditional, while hollow combustors without centerbodies are becoming popular for rotating detonation engines. Both schemes are studied experimentally in this paper to determine which combustor demonstrates a better detonation performance and pressure gain performance.
Yuhui Wang, Jialing Le
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Starting Transients and Detonation Onset Behavior in a Rotating Detonation Combustor
54th AIAA Aerospace Sciences Meeting, 2016The onset phase between combustor initiation and the appearance of a stable, periodic operating state is studied for four combustor conditions. The onset behavior and duration is assessed for varying air flow rate and equivalence ratio for cases with and without a converging nozzle at the combustor exit.
Andrew C. St. George +3 more
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Stabilization mechanisms of longitudinal pulsations in rotating detonation combustors
Proceedings of the Combustion Institute, 2021Abstract This work investigates the stabilization mechanisms of two types of longitudinal pulsations in rotating detonation combustors. The first type is linked to operating modes with two counter-rotating waves in combustors with open outlets and appears as a minor peak in the pressure spectrum. The second type is observed as pulsed operation of the
Richard Bluemner +3 more
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