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Bubble formation and swarm dynamics: Effect of increased viscosity
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SYSNO ASEP 0584833 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Bubble formation and swarm dynamics: Effect of increased viscosity Author(s) Crha, Jakub (UCHP-M) RID, ORCID, SAI
Orvalho, Sandra (UCHP-M) RID, ORCID, SAI
Růžička, Marek (UCHP-M) RID, ORCID, SAI
Shirokov, V. (CZ)
Jerhotová, K. (CZ)
Pokorný, P. (CZ)
Basařová, P. (CZ)Article number 119831 Source Title Chemical Engineering Science. - : Elsevier - ISSN 0009-2509
Roč. 288, APR 15 (2024)Number of pages 14 s. Language eng - English Country GB - United Kingdom Keywords bubble motion dynamics ; bubbles in swarms ; bubble formation ; bubble column ; viscosity effect OECD category Chemical process engineering R&D Projects GA19-09518S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access with time embargo (16.04.2026) Institutional support UCHP-M - RVO:67985858 UT WOS 001182248800001 EID SCOPUS 85184614783 DOI 10.1016/j.ces.2024.119831 Annotation Aiming to make the bridge between the studies of bubble behaviour as single bubble and in bubble columns, the characteristics of bubbles in an aerated column with a low gas content were investigated: bubbles formed at one single 0.5 mm orifice in a partially sparged small lab-scale bubble column were visualized by highspeed camera. The formation process and bubble behaviour at heights of 20 and 40 cm above the orifice were investigated. The bubble size, deformation and velocity were investigated in aqueous glycerol solutions (1 to 10 mPa.s). Average characteristics of the bubbles in swarms were obtained by statistical data processing. It was found that, the bubble formation mechanism governs the size and velocity of bubbles in swarms and that, in the investigated range, viscosity has little effect on the bubble behaviour. Individual bubbles in the swarm differ significantly in their size, shape, and velocity without correlation between these quantities. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2025 Electronic address https://hdl.handle.net/11104/0352652
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