Power-law decaying oscillations of neutrally buoyant spheres in continuously stratified fluid

István Biró, K. Gábor Szabó, Balázs Gyüre, Imre M. Jánosi, Tamás Tél

Research output: Article

3 Citations (Scopus)

Abstract

The free sinking motion of small spheres is experimentally investigated in a laboratory tank filled up with continuously stratified salt solutions. Special attention is paid to the late stage oscillations around the gravitational equilibrium level. Such motion is generated by slowly decaying weak internal waves originating from the interaction of the solid sphere with the surrounding fluid. The temporal decay of oscillation amplitudes and velocities can be best described by a power law of exponent value close to -3/2. Up to our best knowledge, none of the existing theories can predict a similar algebraic decay.

Original languageEnglish
Article number051705
JournalPhysics of Fluids
Volume20
Issue number5
DOIs
Publication statusPublished - máj. 2008

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ASJC Scopus subject areas

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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