Excitation and damping forces on a freely vibrating cylinder

Efstathios Konstantinidis; Jisheng Zhao; J. S. Leontini; David Lo Jacono; John Sheridan

Excitation and damping forces on a freely vibrating cylinder

Efstathios Konstantinidis, Jisheng Zhao, J. S. Leontini, David Lo Jacono, John Sheridan

Mechanical & Aerospace Engineering

Research output: Contribution to conference › Abstract

Abstract

Time-resolved measurements of the fluid forces acting on a circular cylinder undergoing vortex-induced vibration were conducted using a two-component force balance simultaneously with the displacement of the cylinder. The measured forces were analyzed into a component acting along the instantaneous direction of the relative velocity between the oscillating cylinder and the free stream and normal to that direction. The analysis shows that the former compo-nent acts as a damping force opposing the cylinder’s velocity whereas the latter component acts as an excitation force doing positive work on the cylinder.

Original language	English
Number of pages	2
Publication status	Published - 2017
Event	Symposium on Fluid-Structure-Sound Interactions and Control 2017 - Tokyo, Japan Duration: 21 Aug 2017 → 24 Aug 2017 Conference number: 4th http://www.fssic.com/2017conference/

Conference

Conference	Symposium on Fluid-Structure-Sound Interactions and Control 2017
Abbreviated title	FSSIC 2017
Country/Territory	Japan
City	Tokyo
Period	21/08/17 → 24/08/17
Internet address	http://www.fssic.com/2017conference/

Cite this

@conference{ad3faa3380d84bbc8104feb123fc7ba5,

title = "Excitation and damping forces on a freely vibrating cylinder",

abstract = "Time-resolved measurements of the fluid forces acting on a circular cylinder undergoing vortex-induced vibration were conducted using a two-component force balance simultaneously with the displacement of the cylinder. The measured forces were analyzed into a component acting along the instantaneous direction of the relative velocity between the oscillating cylinder and the free stream and normal to that direction. The analysis shows that the former compo-nent acts as a damping force opposing the cylinder{\textquoteright}s velocity whereas the latter component acts as an excitation force doing positive work on the cylinder.",

author = "Efstathios Konstantinidis and Jisheng Zhao and Leontini, \{J. S.\} and \{Lo Jacono\}, David and John Sheridan",

year = "2017",

language = "English",

note = "Symposium on Fluid-Structure-Sound Interactions and Control 2017, FSSIC 2017 ; Conference date: 21-08-2017 Through 24-08-2017",

url = "http://www.fssic.com/2017conference/",

}

TY - CONF

T1 - Excitation and damping forces on a freely vibrating cylinder

AU - Konstantinidis, Efstathios

AU - Zhao, Jisheng

AU - Leontini, J. S.

AU - Lo Jacono, David

AU - Sheridan, John

N1 - Conference code: 4th

PY - 2017

Y1 - 2017

N2 - Time-resolved measurements of the fluid forces acting on a circular cylinder undergoing vortex-induced vibration were conducted using a two-component force balance simultaneously with the displacement of the cylinder. The measured forces were analyzed into a component acting along the instantaneous direction of the relative velocity between the oscillating cylinder and the free stream and normal to that direction. The analysis shows that the former compo-nent acts as a damping force opposing the cylinder’s velocity whereas the latter component acts as an excitation force doing positive work on the cylinder.

AB - Time-resolved measurements of the fluid forces acting on a circular cylinder undergoing vortex-induced vibration were conducted using a two-component force balance simultaneously with the displacement of the cylinder. The measured forces were analyzed into a component acting along the instantaneous direction of the relative velocity between the oscillating cylinder and the free stream and normal to that direction. The analysis shows that the former compo-nent acts as a damping force opposing the cylinder’s velocity whereas the latter component acts as an excitation force doing positive work on the cylinder.

M3 - Abstract

T2 - Symposium on Fluid-Structure-Sound Interactions and Control 2017

Y2 - 21 August 2017 through 24 August 2017

ER -