NDLI: A general method to determine the stability of compressible flows

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A general method to determine the stability of compressible flows

Content Provider	NASA Technical Reports Server (NTRS)
Author	Guenther, R. A. Chang, I. D.
Copyright Year	1982
Description	Several problems were studied using two completely different approaches. The initial method was to use the standard linearized perturbation theory by finding the value of the individual small disturbance quantities based on the equations of motion. These were serially eliminated from the equations of motion to derive a single equation that governs the stability of fluid dynamic system. These equations could not be reduced unless the steady state variable depends only on one coordinate. The stability equation based on one dependent variable was found and was examined to determine the stability of a compressible swirling jet. The second method applied a Lagrangian approach to the problem. Since the equations developed were based on different assumptions, the condition of stability was compared only for the Rayleigh problem of a swirling flow, both examples reduce to the Rayleigh criterion. This technique allows including the viscous shear terms which is not possible in the first method. The same problem was then examined to see what effect shear has on stability.
File Size	4217892
Page Count	142
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19820020696
Archival Resource Key	ark:/13960/t0vq7rw63
Language	English
Publisher Date	1982-05-01
Access Restriction	Open
Subject Keyword	Fluid Mechanics And Heat Transfer Flow Stability Perturbation Theory Jet Flow Lagrange Coordinates Couette Flow Rayleigh Distribution Equations of Motion Compressible Flow Boundary Layer Flow Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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