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Three-dimensional flow instability in a lid-driven isosceles triangular cavity
Three-dimensional flow instability in a lid-driven isosceles triangular cavity (PDF)
Three-dimensional flow instability in a lid-driven isosceles triangular cavity (Other)
Three-dimensional flow instability in a lid-driven isosceles triangular cavity (Other)
Three-dimensional flow instability in a lid-driven isosceles triangular cavity (Other)
Three-dimensional flow instability in a lid-driven isosceles triangular cavity (Other)
Three-dimensional flow instability in a lid-driven isosceles triangular cavity (Other)
Linear three-dimensional modal instability of steady laminar two-dimensional states developing in a lid-driven cavity of isosceles triangular cross-section is investigated theoretically and experimentally for the case in which the equal sides form a rectangular corner. An asymmetric steady two-dimensional motion is driven by the steady motion of one of the equal sides. If the side moves away from the rectangular corner, a stationary three-dimensional instability is found. If the motion is directed towards the corner, the instability is oscillatory. The respective critical Reynolds numbers are identified both theoretically and experimentally. The neutral curves pertinent to the two configurations and the properties of the respective leading eigenmodes are documented and analogies to instabilities in rectangular lid-driven cavities are discussed.
675
2011-05
Three-dimensional flow instability in a lid-driven isosceles triangular cavity
Física
Physics
Mechanics
Mecánica
Cambridge University Press
Kuhnen
J.
J. Kuhnen
Kuhlmann
H. C.
H. C. Kuhlmann
González Gutierrez
Leo Miguel
Leo Miguel González Gutierrez
Theofilis
Vassilios
Vassilios Theofilis
00221120
Journal of Fluid Mechanics