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Velocity-coupled flow oscillations in a simulated solid-propellant rocket environmentA comprehensive numerical analysis has been carried out to study the unsteady flowfields in a simulated rocket-motor environment. The model is based on the time-dependent compressible Navier-Stokes equations with a two-equation turbulence closure scheme. Various important aspects of the coupling between acoustic oscillations and mean flowfields, including flow reversal, modification of transport properties, etc., are addressed. Results indicate that multi-dimensional effects play important roles in determining local flow structures and wave characteristics. In much of the domain, acoustic velocity nodal points are observed in the near-wall region. The classical one-dimensional theory fails to describe several important mechanisms associated with velocity-induced flow instabilities.
Document ID
19880040493
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Yang, Vigor
(Pennsylvania State University University Park, United States)
Hsieh, Kwang-Chung
(NASA Lewis Research Center; Sverdrup Technology, Inc. Cleveland, OH, United States)
Tseng, Jesse I. S.
(Pennsylvania State Univ. University Park, PA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Subject Category
Propellants And Fuels
Report/Patent Number
AIAA PAPER 88-0543
Accession Number
88A27720
Funding Number(s)
CONTRACT_GRANT: F04611-86-K-0082
Distribution Limits
Public
Copyright
Other

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