Vortex-Induced Vibration Annihilation of Two-Degree-of-Freedom Circular Cylinder by Rotational Oscillations

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Rabiee A.H.

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Journal Paper

Paper Information

Journal: JOURNAL OF SOLID AND FLUID MECHANICS Year:2019 | Volume:9 | Issue:2 Page(s): 95-108

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Information Journal Paper

Title

Vortex-Induced Vibration Annihilation of Two-Degree-of-Freedom Circular Cylinder by Rotational Oscillations

Author(s)

Rabiee A.H. | Issue Writer Certificate

Keywords

Flow-Induced VibrationQ1

Lock-on PhenomenonQ1

Rotary OscillationQ1

Active Vibration ControlQ1

Fluid-Solid InteractionQ1

Abstract

In this paper, an active control strategy based on the cylinder forced rotary oscillation is considered to reduce the flow-induced vibration of an elastically mounted two-degree-of-freedom circular cylinder free to vibrate in both transverse and in-line directions. The fluid flow governing equations are two-dimensional incompressible Navier-Stokes model which discretized by means of the finite volume method. The frequency ratio /, and rotation rate α , are two important adjustable parameters which must be selected in such a way that the vortex shedding frequency locked on associated rotational forcing frequency, and the cylinder transverse and in-line vibrations will be suppressed accordingly. Based on comprehensive simulations accomplished in this paper, three different active open-loop control systems is selected in order to effectively reduce the cylinder vibrations for reduced velocities in synchronization region with the following input parameters: (for = 5: = 1, / = 1. 1), (for = 6: = 1, / = 1. 3), and (for = 7: = 1, / = 1. 5). These three control systems are found to decrease the maximum transverse cylinder vibration amplitudes by 88%, 92%, and 92% while the corresponding in-line vibration amplitudes decrease by 93%, 90%, and 82%, respectively.

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APA: Copy

Rabiee, A.H.. (2019). Vortex-Induced Vibration Annihilation of Two-Degree-of-Freedom Circular Cylinder by Rotational Oscillations. JOURNAL OF SOLID AND FLUID MECHANICS, 9(2 ), 95-108. SID. https://sid.ir/paper/366343/en

Vancouver: Copy

Rabiee A.H.. Vortex-Induced Vibration Annihilation of Two-Degree-of-Freedom Circular Cylinder by Rotational Oscillations. JOURNAL OF SOLID AND FLUID MECHANICS[Internet]. 2019;9(2 ):95-108. Available from: https://sid.ir/paper/366343/en

IEEE: Copy

A.H. Rabiee, “Vortex-Induced Vibration Annihilation of Two-Degree-of-Freedom Circular Cylinder by Rotational Oscillations,” JOURNAL OF SOLID AND FLUID MECHANICS, vol. 9, no. 2 , pp. 95–108, 2019, [Online]. Available: https://sid.ir/paper/366343/en

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