Influence of greennoise on the parametric synchronization phenomenon

Flow induced vibration is an important factor affecting the performance of the rotor-seal system. From the point of view of flow induced vibration, the nonlinear models of the rotor-seal system are presented for the analysis of the fluid force, which is induced by the interaction between the unstable fluid flow in the seal and the vibrating rotor. The nonlinear characteristics of flow induced vibration in the rotor-seal system are analyzed, and the nonlinear phenomena in the unbalanced rotor-seal system are investigated using the nonlinear models. Various nonlinear phenomena of flow induced vibration in the rotor-seal system, such as synchronization phenomenon and amplitude mutation, are reproduced.

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Time-domain stability of parametric synchronization in a spin-torque nano-oscillator based on a magnetic tunnel junction

Physical Review B ◽

10.1103/physrevb.96.024427 ◽

2017 ◽

Vol 96 (2) ◽

Cited By ~ 6

Author(s):

Raghav Sharma ◽

Naveen Sisodia ◽

Philipp Dürrenfeld ◽

Johan Åkerman ◽

Pranaba Kishor Muduli

Keyword(s):

Time Domain ◽

Tunnel Junction ◽

Magnetic Tunnel Junction ◽

Spin Torque ◽

Parametric Synchronization ◽

Domain Stability

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The stable limit cycles: A synchronization phenomenon

Journal of the Franklin Institute ◽

10.1016/j.jfranklin.2013.04.015 ◽

2013 ◽

Vol 350 (7) ◽

pp. 1649-1657

Author(s):

Jaume Giné

Keyword(s):

Limit Cycles ◽

Stable Limit ◽

Synchronization Phenomenon ◽

Stable Limit Cycles

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Synchronization phenomenon in the de-tuned rotor driven by regular or chaotic oscillations

10.1063/1.5019098 ◽

2018 ◽

Author(s):

Zofia Szmit ◽

Jerzy Warmiński

Keyword(s):

Chaotic Oscillations ◽

Synchronization Phenomenon

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Modification of Vortex Shedding in the Synchronization Range

Journal of Fluids Engineering ◽

10.1115/1.3241895 ◽

1982 ◽

Vol 104 (4) ◽

pp. 513-517 ◽

Cited By ~ 64

Author(s):

M. M. Zdravkovich

Keyword(s):

Fluid Mechanics ◽

Flow Visualization ◽

Vortex Shedding ◽

Bluff Body ◽

Maximum Amplitude ◽

Oscillating Cylinder ◽

Systematic Analysis ◽

Lower Region ◽

Simple Fluid ◽

Synchronization Phenomenon

One aspect of the synchronization phenomenon, which has attracted little attention so far, is the timing of vortex shedding in relation to the displacement of a bluff body. Systematic analysis of flow visualization within the synchronization range revealed that the jump in fluctuating forces had a simple fluid mechanics origin. The oscillating cylinder imposed not only its frequency to the wake behind it but also the timing of the vortex shedding. In the lower region of the synchronization range, the vortex formed on one side of the cylinder was shed when the cylinder was near to the maximum amplitude on the opposite side. This timing changed suddenly in the upper synchronization range where the vortex of the same circulation as before was shed when the cylinder reached the maximum amplitude on the same side.

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