Centrifugal instabilities in a curved rectangular duct of small aspect ratio

Authors
Gauthier, G Gondret, P Thome, H Rabaud, M
Citation
G. Gauthier et al., Centrifugal instabilities in a curved rectangular duct of small aspect ratio, PHYS FLUIDS, 13(10), 2001, pp. 2831-2834
Citations number
8
Categorie Soggetti
Physics
Journal title
PHYSICS OF FLUIDS
ISSN journal
10706631 → ACNP
Volume
13
Issue
10
Year of publication
2001
Pages
2831 - 2834
Database
ISI
SICI code
1070-6631(200110)13:10<2831:CIIACR>2.0.ZU;2-#
Abstract
We report experimental results on the stability of the flow occurring in a curved rectangular duct of small aspect ratio, where the centrifugational f orces act along the largest dimension. The basic flow is three-dimensional as in a square or circular curved duct, and above a critical flow rate, str eamwise vortices are observed. The threshold of the instability is found to be controlled by a Dean number. (C) 2001 American Institute of Physics.