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Bubble Coalescence: Effect of Bubble Approach Velocity and Liquid Viscosity
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SYSNO ASEP 0444323 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Bubble Coalescence: Effect of Bubble Approach Velocity and Liquid Viscosity Tvůrce(i) Orvalho, Sandra (UCHP-M) RID, ORCID, SAI
Růžička, Marek (UCHP-M) RID, ORCID, SAI
Olivieri, G. (IT)
Marzocchella, A. (IT)Zdroj.dok. Chemical Engineering Science. - : Elsevier - ISSN 0009-2509
Roč. 134, SEP 29 (2015), s. 205-216Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova bubble coalescence ; bubble approach velocity ; liquid viscosity Vědní obor RIV CI - Průmyslová chemie a chemické inženýrství CEP LD13018 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000359029200019 EID SCOPUS 84929598574 DOI 10.1016/j.ces.2015.04.053 Anotace The goal of this study is to present new experimental data on the effect of the bubble approach velocity and liquid viscosity on pairwise bubble coalescence. Measurements were performed to investigate the dynamics of bubble coalescence under well-defined laboratory conditions. Air and pure aqueous solutions of alginate (no surfactants) were the phases. The bubbles were formed from two vertical capillaries, under constant flow conditions. The coalescence process was recorded with a fast video and then image analysed, to evaluate the bubble growth, bubble expansion rate, the first bubble touch, bubble contact time T, bubble coalescence efficiency E. Three control parameters were tested. The bubble size D on contact was set by the spacing between the capillaries (D = 1 and 1.5 mm). The bubble approach velocity V was controlled by the gas input (V = 0.031 - 39 mm/s). The liquid viscosity μ was adjusted by the alginate content (μ = 1.2 - 10.3 mPa.s). Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2016
Počet záznamů: 1