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  • Dynamic behaviour of hydrodynamically interacting particles at intermediate Reynolds number is far from being understood. A relatively simple example is one-dimensional array of bubbles rising through a quiescent liquid (bubble chain, bubble trail, bubble line). This problem is doable when employing a simple force-law model approach. Then, the set of the governing equations can be investigated. An important issue is the stability of such arrays: when the particles are slightly displaced from their equilibrium positions of uniform spacing, will they return or will the disturbances grow? The present contribution addresses the stability analysis of a bubble chain. It is found that source of instability is related to the shielding force, which expresses the drag dependence of a bubble on the distance from the preceding bubble. This kind of instability is rather new, analyse in a great detail for the first time.
  • Dynamic behaviour of hydrodynamically interacting particles at intermediate Reynolds number is far from being understood. A relatively simple example is one-dimensional array of bubbles rising through a quiescent liquid (bubble chain, bubble trail, bubble line). This problem is doable when employing a simple force-law model approach. Then, the set of the governing equations can be investigated. An important issue is the stability of such arrays: when the particles are slightly displaced from their equilibrium positions of uniform spacing, will they return or will the disturbances grow? The present contribution addresses the stability analysis of a bubble chain. It is found that source of instability is related to the shielding force, which expresses the drag dependence of a bubble on the distance from the preceding bubble. This kind of instability is rather new, analyse in a great detail for the first time. (en)
Title
  • Shielding instability of bubble chain.
  • Shielding instability of bubble chain. (en)
skos:prefLabel
  • Shielding instability of bubble chain.
  • Shielding instability of bubble chain. (en)
skos:notation
  • RIV/61989100:27360/03:00008659!RIV/2004/GA0/273604/N
http://linked.open.../vavai/riv/strany
  • 183
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA104/01/0547)
http://linked.open...vai/riv/dodaniDat
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  • 626902
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  • RIV/61989100:27360/03:00008659
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  • bubble chain, stability (en)
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http://linked.open...ontrolniKodProRIV
  • [F38F6EF547D3]
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  • Bratislava
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  • Bratislava
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  • Procedings of 30th Conference SSCHE
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  • Wichterle, Kamil
  • Ruzicka, M. C.
  • Fialová, M.
  • Thomas, N. H.
  • Drahoš, J.
  • Thomac, N. H.
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
number of pages
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  • Slovenská technická univerzita v Bratislave
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  • 80-227-1889-0
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  • 27360
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