Rotating Detonation Combustor Mechanics
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University of Cincinnati / OhioLINK
2018
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| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=ucin1530798871271548 |
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ndltd-OhioLink-oai-etd.ohiolink.edu-ucin15307988712715482021-08-03T07:07:31Z Rotating Detonation Combustor Mechanics Anand, Vijay G. Aerospace Materials Rotating Detonation Engine Pressure Gain Combustion Combustion Instability Detonation Physics Recent years have witnessed a notable increase in endeavors resorted to investigating unsteady combustion/pressure processes that offer a prospective increase in stagnation pressure due to a more efficient combustion of fuel. One such pressure gain combustion (PGC) concept is a rotating detonation combustor (RDC). RDCs make use of a rotating detonation wave that travels circumferentially about a hollow or annular chamber at kilohertz frequencies, continually combusting the supplied reactants without the need for more than one initial ignition event. Due to its simplicity in design, which can be integrated into existing systems’ architecture, and the lack of moving mechanical components, RDCs are at the forefront of PGC research. The current dissertation deals with the basic mechanics of these combustors. Specifically, the diverse modes of detonative operation in annular and hollow combustor configurations are experimentally studied, and the variables dictating these modes are extracted. The question of what exactly constitutes a rotating detonation combustor is answered, by “converting” a conventional atmospheric deflagrative hollow combustor into an RDC. Further, based on this demonstration, the numerous kinships between RDC operation and decades of observations pertaining to high frequency combustion instabilities in rocket engines are presented and discussed. It is argued that most of the poorly understood phenomena of high frequency instabilities can be explained by detonation-based physics. Finally, evidence is presented that suggests rotating detonations to be type of near-limit detonation behavior. The findings of this study are proposed to be useful for the three different communities of RDC research, rocket engine instabilities and fundamental detonation physics. 2018-10-02 English text University of Cincinnati / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=ucin1530798871271548 http://rave.ohiolink.edu/etdc/view?acc_num=ucin1530798871271548 unrestricted This thesis or dissertation is protected by copyright: some rights reserved. It is licensed for use under a Creative Commons license. Specific terms and permissions are available from this document's record in the OhioLINK ETD Center. |
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NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Aerospace Materials Rotating Detonation Engine Pressure Gain Combustion Combustion Instability Detonation Physics |
| spellingShingle |
Aerospace Materials Rotating Detonation Engine Pressure Gain Combustion Combustion Instability Detonation Physics Anand, Vijay G. Rotating Detonation Combustor Mechanics |
| author |
Anand, Vijay G. |
| author_facet |
Anand, Vijay G. |
| author_sort |
Anand, Vijay G. |
| title |
Rotating Detonation Combustor Mechanics |
| title_short |
Rotating Detonation Combustor Mechanics |
| title_full |
Rotating Detonation Combustor Mechanics |
| title_fullStr |
Rotating Detonation Combustor Mechanics |
| title_full_unstemmed |
Rotating Detonation Combustor Mechanics |
| title_sort |
rotating detonation combustor mechanics |
| publisher |
University of Cincinnati / OhioLINK |
| publishDate |
2018 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1530798871271548 |
| work_keys_str_mv |
AT anandvijayg rotatingdetonationcombustormechanics |
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