Shielding instability of bubble chain.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F03%3A00008659" target="_blank" >RIV/61989100:27360/03:00008659 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Shielding instability of bubble chain.
Original language description
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.
Czech name
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Czech description
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Project
<a href="/en/project/GA104%2F01%2F0547" target="_blank" >GA104/01/0547: Instability of homogeneous flow regime in bubble columns</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2003
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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