Work

Wake-body Resonance of Long Flexible Structures is Dominated by Counterclockwise Orbits

Year: 2011

Type: article

Abstract: We identify a dominant mechanism in the interaction between a slender flexible structure undergoing free vibrations in sheared cross-flow and the vortices forming in its wake: energy is transferred from the fluid to the body under a resonance condition, defined as wake-body frequency synchronization close to a natural frequency of the structure; this condition occurs within a well-defined region of the span, which is dominated by counterclockwise, figure-eight orbits. Clockwise orbits are associated with damping fluid forces.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.107.134502

Authors: Rémi Bourguet, Yahya Modarres-Sadeghi, George E. Karniadakis, Michael S. Triantafyllou

Institutions: Massachusetts Institute of Technology, University of Massachusetts Amherst, Brown University

Language: English

Topic: Fluid Dynamics and Vibration Analysis

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2089337061

FWCI: 2.891

Cites: 22

Cited by: 70

Related to: 10