On the steady‐state drop size distribution in stirred vessels. Part II: Effect of continuous phase viscosity
| Autor: | Sergio Carrillo De Hert, Thomas L. Rodgers |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Drop breakup
Environmental Engineering Steady state (electronics) Drop size Continuous phase modulation Materials science Distribution (number theory) Viscosity General Chemical Engineering Emulsication Mechanics Physics::Fluid Dynamics ResearchInstitutes_Networks_Beacons/dalton_nuclear_institute Stirred vessel Dalton Nuclear Institute Droplet size distribution Biotechnology |
| Zdroj: | Carrillo De Hert, S & Rodgers, T 2019, ' On the steady-state drop size distribution in stirred vessels. Part II: effect of continuous phase viscosity ', American Institution of Chemical Engineers Journal . https://doi.org/10.1002/aic.16556 |
| ISSN: | 1547-5905 0001-1541 |
| DOI: | 10.1002/aic.16556 |
| Popis: | In Part I1 we used silicon oils with viscosities across six orders of magnitudeto investigated the effect of the dispersed phase viscosity on the DSDof dilute emulsions. In this study we extended Part I by using three glucoseaqueous solutions to thicken the continuous phases approximately an orderof magnitude while keeping the Power number constant. It was found thatincreasing the continuous phase viscosity decreases the maximum drop sizedespite having drops well above the Kolmogorov length-scale. Our resultsare in disagreement with the mechanistic models for the turbulent inertiaregime. The results were explained using the full turbulent energy spectrumproposed by Pope 2 instead of the Kolmogorov -5/3 spectrum. Our analysisrevealed that most of the steady-state drop sizes do not fall in the isotropicturbulence size range. |
| Databáze: | OpenAIRE |
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