hal-01290450
https://ensta-paris.hal.science/hal-01290450
https://ensta-paris.hal.science/hal-01290450/document
https://ensta-paris.hal.science/hal-01290450/file/CADOT_VF2016.pdf
[CEA] CEA - Commissariat à l'énergie atomique
[ENSTA] ENSTA Paris
[CNRS] CNRS - Centre national de la recherche scientifique
[ENSTA_UME] Unité de Mécanique
[CEA-UPSAY] CEA - Université Paris-Saclay
[UNIV-PARIS-SACLAY] Université Paris-Saclay
[CEA-UPSAY-SACLAY] CEA-UPSAY-SACLAY
[ENSTA-SACLAY] ENSTA-SACLAY
[EDF] EDF
Stochastic fluid structure interaction of a flat plate facing a uniform flow
Cadot, Olivier
[SPI] Engineering Sciences [physics]
COMM
Stochastic
Symmetry breaking
Fluid structure interaction
Non Gaussian statistics
An experiment of a flat rectangular plate facing a uniform flow at Re=264000 shows the importance on the base pressure loading of the asymmetric static modes of the turbulent wake. The plate is free to rotate around its small symmetry axis. For plates with aspect ratio <6, the angular position exhibits strong random discontinuities between steady states of large non zero angles. The steady states have long time durations, more than one order of magnitude larger than the convective timescale. The discontinuities, comparable to violent and unexpected events are due to strong fluid forces associated with the drastic global change of the three dimensional wake, mainly the switching between static asymmetric modes.
2016-03-09
2016-03-18
en
3rd International Conference on Violent Flows 2016
Osaka, Japan