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Pinho, Henrique J. O.; Mateus, Dina M. R.; Alves, Sebastião S.
Chemical engineering communications, 08/2018, Letnik: 205, Številka: 8Journal Article
Bubble size distribution (BSD) is relevant to the design of gas-liquid systems, as it determines the interfacial area available in heat and mass transfer processes. Although data on BSD in stirred aerated tanks are available, a systematic comparison of alternative modeling functions for these data is lacking. In this work, BSDs obtained in air-water dispersions in a stirred aerated tank with a Rushton turbine and BSDs available in the literature for similar systems were modeled by 14 empirical probability density functions (PDFs). It was found that both the distribution of Nukiyama-Tanasawa with three adjustable parameters and the Rosin-Rammler distribution with two adjustable parameters reasonably fit original and literature BSDs. It is also concluded that it is possible to correlate the PDF parameters with the power dissipated by the agitator in the liquid phase, allowing the BSD to be modeled with only two parameters in a range of dissipated power from 0.5 to 2.3 kW/m 3 . BSDs thus modeled provide good predictions of average bubble size.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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