3-DIMENSIONAL LONG-WAVE INSTABILITY OF UNIDIRECTIONAL SPATIALLY PERIODIC VISCOUS FLOWS

Authors
KHAZAN YS NEPOMNYASHCHY AA
Citation
Ys. Khazan et Aa. Nepomnyashchy, 3-DIMENSIONAL LONG-WAVE INSTABILITY OF UNIDIRECTIONAL SPATIALLY PERIODIC VISCOUS FLOWS, Journal of Fluid Mechanics, 325, 1996, pp. 283-301
Citations number
19
Categorie Soggetti
Mechanics,"Phsycs, Fluid & Plasmas
Journal title
Journal of Fluid Mechanics → ACNP
ISSN journal
00221120
Volume
325
Year of publication
1996
Pages
283 - 301
Database
ISI
SICI code
0022-1120(1996)325:<283:3LIOUS>2.0.ZU;2-Z
Abstract
The long-wave instability of unidirectional spatially periodic flows i s investigated by means of asymptotic expansions. It is shown that the wavevector of the most dangerous disturbances is generally inclined t o the direction of the basic stream. A new type of long-wave oscillato ry instability is discovered, and a comparison with results of previou s investigations is performed.