Abstract
Using linear stability analysis, the instability characteristics are examined of both planar wakes and mixing layers subjected to rigid-body rotation with axis of rotation perpendicular to the plane of the ambient flow. In particular, the tendency of rotation to stabilize or destabilize three-dimensional motions is addressed. In the inviscid limit the results are consistent with the criterion established by Pedley [J. Fluid Mech. 35, 97 (1969)] and Bradshaw [J. Fluid Mech. 36, 177 (1969)]. Cyclonic rotation and strong anticyclonic rotation tend to stabilize three-dimensional motions, whereas weaker anticyclonic rotation (Ro>1) acts to destabilize these motions. This latter instability is in the form of streamwise rolls, similar to previous results obtained for boundary layer and channel flows. It is found that this instability is stronger than the coexisting Kelvin-Helmholtz instability for roughly the range 1.5
| Original language | English |
|---|---|
| Pages (from-to) | 2725-2737 |
| Number of pages | 13 |
| Journal | Physics of Fluids A |
| Volume | 5 |
| Issue number | 11 |
| Publication status | Published - 1992 |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Physics and Astronomy(all)
- Mechanics of Materials
- Computational Mechanics
- Fluid Flow and Transfer Processes
Cite this
Rotating free-shear flows. I. Linear stability analysis. / Yanase, Shinichiro; Flores, Carlos; Métais, Olivier; Riley, James J.
In: Physics of Fluids A, Vol. 5, No. 11, 1992, p. 2725-2737.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Rotating free-shear flows. I. Linear stability analysis
AU - Yanase, Shinichiro
AU - Flores, Carlos
AU - Métais, Olivier
AU - Riley, James J.
PY - 1992
Y1 - 1992
N2 - Using linear stability analysis, the instability characteristics are examined of both planar wakes and mixing layers subjected to rigid-body rotation with axis of rotation perpendicular to the plane of the ambient flow. In particular, the tendency of rotation to stabilize or destabilize three-dimensional motions is addressed. In the inviscid limit the results are consistent with the criterion established by Pedley [J. Fluid Mech. 35, 97 (1969)] and Bradshaw [J. Fluid Mech. 36, 177 (1969)]. Cyclonic rotation and strong anticyclonic rotation tend to stabilize three-dimensional motions, whereas weaker anticyclonic rotation (Ro>1) acts to destabilize these motions. This latter instability is in the form of streamwise rolls, similar to previous results obtained for boundary layer and channel flows. It is found that this instability is stronger than the coexisting Kelvin-Helmholtz instability for roughly the range 1.5
AB - Using linear stability analysis, the instability characteristics are examined of both planar wakes and mixing layers subjected to rigid-body rotation with axis of rotation perpendicular to the plane of the ambient flow. In particular, the tendency of rotation to stabilize or destabilize three-dimensional motions is addressed. In the inviscid limit the results are consistent with the criterion established by Pedley [J. Fluid Mech. 35, 97 (1969)] and Bradshaw [J. Fluid Mech. 36, 177 (1969)]. Cyclonic rotation and strong anticyclonic rotation tend to stabilize three-dimensional motions, whereas weaker anticyclonic rotation (Ro>1) acts to destabilize these motions. This latter instability is in the form of streamwise rolls, similar to previous results obtained for boundary layer and channel flows. It is found that this instability is stronger than the coexisting Kelvin-Helmholtz instability for roughly the range 1.5
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UR - http://www.scopus.com/inward/citedby.url?scp=36449007402&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:36449007402
VL - 5
SP - 2725
EP - 2737
JO - Physics of fluids. A, Fluid dynamics
JF - Physics of fluids. A, Fluid dynamics
SN - 0899-8213
IS - 11
ER -