A new method for stability analysis of a free jet with arbitrary cross section
- Creators
- Koshigoe, S.
- Yang, V.
- Culick, F. E. C.
- Tubis, A.
Abstract
A new approach for linear analysis of the stability of jets with arbitrary mean velocity profiles is presented. This method is based on utilizing Green function technique a to transform the Rayleigh equation into an integral equation form. The integral equation is then solved numerically using a type of finite element approximation to determine the eigenvectors and complex wave numbers of various instability modes. In order to demonstrate this method's capability of handling arbitrary jet mean velocity profiles, a comparison is made to the elliptic jet case where generally good agreement 1s apparent. A brief discussion on how the effects of compressibility and temperature variation in flows car be incorporated within the formalism is presented.
Additional Information
This paper is declared a work of the U.S. Government and therefore is in the public domain. We wish to thank Prof. P. J. Morris for sending us his calculation results. Thanks are also due to Dr. R. L. Derr for his encouragement given to us during the course of this work.Attached Files
Published - 388_Koshigoe_S_1986.pdf
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Additional details
- Eprint ID
- 20931
- Resolver ID
- CaltechAUTHORS:20101122-083110170
- Created
-
2010-12-04Created from EPrint's datestamp field
- Updated
-
2019-10-03Created from EPrint's last_modified field
- Caltech groups
- Guggenheim Jet Propulsion Center, GALCIT
- Series Name
- AIAA Papers
- Series Volume or Issue Number
- AIAA-86-0542
- Other Numbering System Name
- AIAA
- Other Numbering System Identifier
- 86-0542