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arXiv · 1708.08645

Resonance properties of forced oscillations of particles and gaseous bubbles in a viscous fluid at small Reynolds numbers

Yury A. Stepanyants·Hassan K. Hassan
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Abstract

We consider small oscillations of micro-particles and gaseous bubbles in viscous fluid around equilibrium states under the action of a sinusoidal external force. Exact solutions to the governing integro-differential equations containing both Stokes and memory-integral drag forces are obtained. The main aim of this study is to clarify the influence of the memory-integral drag force on the resonance characteristics of oscillating particles or gaseous bubbles in a viscous fluid at small Reynolds numbers. The resonant curves (amplitude versus frequency of external force), as well as phase-frequency dependences are obtained for both these objects and compared with the corresponding dependences of the traditional oscillator with the Stokes drag force only.

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Yury A. Stepanyants, Hassan K. Hassan. 2017-08-29. Resonance properties of forced oscillations of particles and gaseous bubbles in a viscous fluid at small Reynolds numbers. https://doi.org/10.1063/1.5002152

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