This Brief Communication presents a numerical investigation of the dimensionality of a flow behind a three-dimensional rotationally oscillating circular cylinder. These computations are performed at a Reynolds number Re500, which is at a level where the mode B is the dominant three-dimensional instability. We show that a rotation of high enough amplitude makes the 3D instabilities vanish and brings the flow back to its nominal two-dimensional state.
Publié le : 2002-06-04
Classification:
[MATH]Mathematics [math],
[MATH.MATH-NA]Mathematics [math]/Numerical Analysis [math.NA],
[MATH.MATH-OC]Mathematics [math]/Optimization and Control [math.OC],
[INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation,
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Mechanics of the fluids [physics.class-ph]
@article{hal-02010698,
author = {Poncet, Philippe},
title = {Vanishing of mode B in the wake behind a rotationally oscillating circular cylinder},
journal = {HAL},
volume = {2002},
number = {0},
year = {2002},
language = {en},
url = {http://dml.mathdoc.fr/item/hal-02010698}
}
Poncet, Philippe. Vanishing of mode B in the wake behind a rotationally oscillating circular cylinder. HAL, Tome 2002 (2002) no. 0, . http://gdmltest.u-ga.fr/item/hal-02010698/