TY - JOUR
SP - 369
VL - 675
SN - 0022-1120
KW - instability; transition to turbulence
Y1 - 2011/05//
PB - Cambridge University Press
JF - Journal of Fluid Mechanics
ID - upm12112
TI - Three-dimensional flow instability in a lid-driven isosceles triangular cavity
EP - 396
UR - http://oa.upm.es/12112/
N2 - 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.
AV - public
A1 - González Gutierrez, Leo Miguel
A1 - Kuhnen, J.
A1 - Theofilis, Vassilios
A1 - Kuhlmann, H. C.
ER -