Efficient computation of the stability of three-dimensional compressible boundary layersMethods for the computer analysis of the stability of three-dimensional compressible boundary layers are discussed and the user-oriented Compressible Stability Analysis (COSAL) computer code is described. The COSAL 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 an LFC swept wing.
Document ID
19810053709
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Malik, M. R. (Systems and Applied Sciences Corp. Hampton, VA, United States)
Orszag, S. A. (MIT Cambridge, MA, United States)
Date Acquired
August 11, 2013
Publication Date
June 1, 1981
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
AIAA PAPER 81-1277
Meeting Information
Meeting: Fluid and Plasma Dynamics Conference
Location: Palo Alto, CA
Start Date: June 23, 1981
End Date: June 25, 1981
Sponsors: American Institute of Aeronautics and Astronautics