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Three-dimensional numerical simulation of gradual opening in a wave rotor passageThe evolution of the contact interface and the propagation of compression waves inside a single wave rotor passage gradually opening to and traversing an inlet port is studied numerically using an inviscid formulation of the governing equations. Insights into the response of the interface and kinematics of the flow field to various opening times are given. Since the opening time is inversely proportional to the rotational speed of the rotor, the effects of passage rotation such as centripetal and Coriolis accelerations are intrinsically coupled to the gradual opening process. Certain three-dimensional features associated with the gradual opening process as a result of centripetal and Coriolis accelerations are illustrated. For the range of opening times or rotational speeds considered, a portion of the interface behaves like a vortex sheet that can degenerate into a complex interfacial structure. The vortices produced along the interface can serve as a stirring mechanism to promote local mixing. Coriolis and centripetal accelerations can introduce three dimensional effects such as interfacial distortions in meridional planes and spanwise migration of fluid elements.
Document ID
19930019883
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Larosiliere, Louis M.
(Ohio Aerospace Inst. Brook Park, OH, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1993
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NAS 1.26:191157
E-7957
AIAA PAPER 93-2526
NASA-CR-191157
Meeting Information
Meeting: Joint Propulsion Conference and Exhibit
Location: Monterey, CA
Country: United States
Start Date: June 28, 1993
End Date: June 30, 1993
Sponsors: AIAA, ASEE, ASME, SAE
Accession Number
93N29072
Funding Number(s)
CONTRACT_GRANT: NCC3-208
PROJECT: RTOP 505-62-10
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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