2019-12-13T22:56:45Z
http://oa.upm.es/cgi/oai2
oai:oa.upm.es:12112
2016-04-21T11:17:59Z
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Three-dimensional flow instability in a lid-driven isosceles triangular cavity
González Gutierrez, Leo Miguel
Kuhnen, J.
Theofilis, Vassilios
Kuhlmann, H. C.
Physics
Mechanics
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.
E.T.S.I. Navales (UPM)
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
2011-05
info:eu-repo/semantics/article
Article
Journal of Fluid Mechanics, ISSN 0022-1120, 2011-05, Vol. 675
PeerReviewed
application/pdf
eng
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/altIdentifier/doi/10.1017/S002211201100022X
http://oa.upm.es/12112/