A CFD-based approach to study cavitation in high-pressure homogenizer valves. Part 2. Cavitation intensity
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| Názov: | A CFD-based approach to study cavitation in high-pressure homogenizer valves. Part 2. Cavitation intensity |
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| Autori: | Håkansson, Andreas, Rütten, Eva, Ranade, Vivek V. |
| Prispievatelia: | Lund University, Faculty of Engineering, LTH, LTH Profile areas, LTH Profile Area: Food and Bio, Lunds universitet, Lunds Tekniska Högskola, LTH profilområden, LTH profilområde: Livsmedel och bioteknik, Originator, Lund University, Faculty of Engineering, LTH, Departments at LTH, Department of Process and Life Science Engineering, Division of Food and Pharma, Lunds universitet, Lunds Tekniska Högskola, Institutioner vid LTH, Institutionen för processteknik och tillämpad biovetenskap, Avdelningen för livsmedel och läkemedel, Originator, Lund University, Faculty of Engineering, LTH, Departments at LTH, Department of Process and Life Science Engineering, Lunds universitet, Lunds Tekniska Högskola, Institutioner vid LTH, Institutionen för processteknik och tillämpad biovetenskap, Originator |
| Zdroj: | Chemical Engineering Science. 316 |
| Predmety: | Engineering and Technology, Chemical Engineering, Circular Food Process Technologies, Teknik, Kemiteknik, Livsmedelsprocessteknik, Mechanical Engineering, Fluid Mechanics, Maskinteknik, Strömningsmekanik |
| Popis: | Hydrodynamic cavitation take place in high-pressure homogenizer (HPH) valves. Cavitation wear, free radical formation and ultrasonic emissions are linked to the cavitation intensity. Cavitation intensity is also a key factor to understand any effect cavitation might have on particle breakup. Based on an approach used in previous studies on other devices, this contribution applies and tests a modelling framework for predicting and understanding cavitation intensity in a HPH valve. Effects of homogenizing pressure and backpressure are studied. Results show an increase in cavitation intensity with homogenizing pressure. The cavitation implosion induced dissipation rate of energy in a HPH is substantially lower than the dissipation rate of turbulent kinetic energy, which helps to explain previously reported empirical findings showing that cavitation does not break emulsion drops in HPHs. This contribution shows the importance of distinguishing between extent and intensity when discussing cavitation in HPH valves. |
| Prístupová URL adresa: | https://doi.org/10.1016/j.ces.2025.121896 |
| Databáza: | SwePub |
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Nájsť tento článok vo Web of Science | Abstrakt: | Hydrodynamic cavitation take place in high-pressure homogenizer (HPH) valves. Cavitation wear, free radical formation and ultrasonic emissions are linked to the cavitation intensity. Cavitation intensity is also a key factor to understand any effect cavitation might have on particle breakup. Based on an approach used in previous studies on other devices, this contribution applies and tests a modelling framework for predicting and understanding cavitation intensity in a HPH valve. Effects of homogenizing pressure and backpressure are studied. Results show an increase in cavitation intensity with homogenizing pressure. The cavitation implosion induced dissipation rate of energy in a HPH is substantially lower than the dissipation rate of turbulent kinetic energy, which helps to explain previously reported empirical findings showing that cavitation does not break emulsion drops in HPHs. This contribution shows the importance of distinguishing between extent and intensity when discussing cavitation in HPH valves. |
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| ISSN: | 00092509 |
| DOI: | 10.1016/j.ces.2025.121896 |