NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
On the use of Lagrangian variables in descriptions of unsteady boundary-layer separationThe Lagrangian description of unsteady boundary layer separation is reviewed from both analytical and numerical perspectives. It is explained in simple terms how particle distortion gives rise to unsteady separation, and why a theory centered on Lagrangian coordinates provides the clearest description of this phenomenon. Some of the more recent results for unsteady three dimensional compressible separation are included. The different forms of separation that can arise from symmetries are emphasized. A possible description of separation is also included when the detaching vorticity layer exits the classical boundary layer region, but still remains much closer to the surface than a typical body-lengthscale.
Document ID
19900019473
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Cowley, Stephen J. (California Inst. of Tech. Pasadena., United States)
Vandommelen, Leon L. (Institute for Computer Applications in Science and Engineering Hampton, VA, United States)
Lam, Shui T. (National Power Technology and Environmental Centre Leatherhead, United Kingdom)
Date Acquired
September 6, 2013
Publication Date
July 1, 1990
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NAS 1.26:182071
ICASE-90-47
NASA-CR-182071
AD-A227114
Accession Number
90N28789
Funding Number(s)
CONTRACT_GRANT: NAS1-18605
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