Three-dimensional flow instability in a lid-driven isosceles triangular cavity

González Gutierrez, Leo Miguel and Kuhnen, J. and Theofilis, Vassilios and Kuhlmann, H. C. (2011). Three-dimensional flow instability in a lid-driven isosceles triangular cavity. "Journal of Fluid Mechanics", v. 675 ; pp. 369-396. ISSN 0022-1120. https://doi.org/10.1017/S002211201100022X.

Description

Title: Three-dimensional flow instability in a lid-driven isosceles triangular cavity
Author/s:
  • González Gutierrez, Leo Miguel
  • Kuhnen, J.
  • Theofilis, Vassilios
  • Kuhlmann, H. C.
Item Type: Article
Título de Revista/Publicación: Journal of Fluid Mechanics
Date: May 2011
ISSN: 0022-1120
Volume: 675
Subjects:
Freetext Keywords: instability; transition to turbulence
Faculty: E.T.S.I. Navales (UPM)
Department: Enseñanzas Básicas de la Ingeniería Naval [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

More information

Item ID: 12112
DC Identifier: http://oa.upm.es/12112/
OAI Identifier: oai:oa.upm.es:12112
DOI: 10.1017/S002211201100022X
Deposited by: Memoria Investigacion
Deposited on: 11 Sep 2012 12:53
Last Modified: 21 Apr 2016 11:17
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