NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Vortex breakdown simulation - A circumspect study of the steady, laminar, axisymmetric modelThe incompressible axisymmetric steady Navier-Stokes equations are written using the streamfunction-vorticity formulation. The resulting equations are discretized using a second-order central-difference scheme. The discretized equations are linearized and then solved using an exact LU decomposition, Gaussian elimination, and Newton iteration. Solutions are presented for Reynolds numbers (based on vortex core radius) 100-1800 and swirl parameter 0.9-1.1. The effects of inflow boundary conditions, the location of farfield and outflow boundaries, and mesh refinement are examined. Finally, the stability of the steady solutions is investigated by solving the time-dependent equations.
Document ID
19890034978
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Salas, M. D.
(NASA Langley Research Center Hampton, VA, United States)
Kuruvila, G.
(Vigyan Research Associates, Inc. Hampton, VA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Publication Information
Publication: Computers and Fluids
Volume: 17
Issue: 1 19
ISSN: 0045-7930
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
89A22349
Funding Number(s)
CONTRACT_GRANT: NAS1-17919
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available