A NORMAL MULTIMODE DECOMPOSITION METHOD FOR STABILITY EXPERIMENTS

Authors
TUMIN A AMITAY M COHEN J ZHOU MD
Citation
A. Tumin et al., A NORMAL MULTIMODE DECOMPOSITION METHOD FOR STABILITY EXPERIMENTS, Physics of fluids, 8(10), 1996, pp. 2777-2779
Citations number
6
Categorie Soggetti
Mechanics,"Phsycs, Fluid & Plasmas
Journal title
Physics of fluids → ACNP
ISSN journal
10706631
Volume
8
Issue
10
Year of publication
1996
Pages
2777 - 2779
Database
ISI
SICI code
1070-6631(1996)8:10<2777:ANMDMF>2.0.ZU;2-5
Abstract
A method for decomposition of an experimental signal that contains sev eral normal modes with a prescribed frequency, is proposed. The method is based on an expansion of solutions for small-amplitude spatially g rowing disturbances in a biorthogonal eigenfunction system. It is show n that data of one velocity component at a given cross-stream section of the flow are in some cases, sufficient for the decomposition. The m ethod is applied successfully to analyze small-amplitude periodic dist urbances in a transitional wall-jet flow. (C) 1996 American Institute of Physics.