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Finite-difference solution of the compressible stability eigenvalue problemA compressible stability analysis computer code is developed. The code uses a matrix finite difference method for local eigenvalue solution when a good guess for the eigenvalue is available and is significantly more computationally efficient than the commonly used initial value approach. The local eigenvalue search procedure also results in eigenfunctions and, at little extra work, group velocities. A globally convergent eigenvalue procedure is also developed which may be used when no guess for the eigenvalue is available. The global problem is formulated in such a way that no unstable spurious modes appear so that the method is suitable for use in a black box stability code. Sample stability calculations are presented for the boundary layer profiles of a Laminar Flow Control (LFC) swept wing.
Document ID
19820020697
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Malik, M. R. (Systems and Applied Sciences Corp. Hampton, VA, United States)
Date Acquired
September 4, 2013
Publication Date
June 1, 1982
Publication Information
Publisher: NASA
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NASA-CR-3584
NAS 1.26:3584
Accession Number
82N28573
Funding Number(s)
CONTRACT_GRANT: NAS1-16572
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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