NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Amplitude-dependent neutral modes in compressible boundary layer flowsThe ideas of Benney and Bergeron (1969) and Davies (1970) on nonlinear critical layers are extended, and some new nonlinear neutral modes are computed for compressible boundary layer flow. A special case of the work is when the generalized inflexion point criterion holds. Neutral modes are found for a range of phase-speeds, dependent on the Mach number, and the properties of these are discussed. As in the linear case when the flow is relatively supersonic, multiple neutral modes exist. The behavior of the neutral amplitude in some limiting cases is also considered, and it is found that the results are significantly different from that in incompressible flow when the flow is locally supersonic.
Document ID
19900011010
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Gajjar, J. S. B. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
March 1, 1990
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NAS 1.15:102524
ICOMP-90-06
E-5331
NASA-TM-102524
Accession Number
90N20326
Funding Number(s)
CONTRACT_GRANT: NASA ORDER C-99066-G
PROJECT: RTOP 505-62-21
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available