Particle impact in high-pressure homogenizer valves – A step towards understanding wear and cell breakup in food and beverage processing
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| Title: | Particle impact in high-pressure homogenizer valves – A step towards understanding wear and cell breakup in food and beverage processing |
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| Authors: | Ransmark, Eva, Håkansson, Andreas |
| Contributors: | 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 |
| Source: | Food and Bioproducts Processing. 149:1-15 |
| Subject Terms: | Engineering and Technology, Other Engineering and Technologies, Teknik, Annan teknik, Chemical Engineering, Kemiteknik, Mechanical Engineering, Fluid Mechanics, Maskinteknik, Strömningsmekanik |
| Description: | In many liquid food processing applications using high-pressure homogenizers (HPHs), particles impact with the solid surfaces of the homogenization device. This may lead to costly wear. For some applications, impact is also postulated to control the desired cell disruption. This contribution uses computational fluid dynamics to study impact of particles on solid surfaces in HPHs, as a step towards design optimization. Effects of particle diameter, density, homogenizing pressure, and impact distance are studied. Results show impacts both on the forcer and on the impingement ring. Few particles hit the forcer, at low velocities and with low angles (‘bracing impacts’). More particles hit the impact ring. These impacts are with higher velocities and typically occur head-on. The effect of both homogenizing pressure and impact ring distance scales according to a previously suggested stagnation pressure model. Results are discussed in the light of wear and cell disruption observations. |
| Access URL: | https://doi.org/10.1016/j.fbp.2024.11.001 |
| Database: | SwePub |
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Nájsť tento článok vo Web of Science | Abstract: | In many liquid food processing applications using high-pressure homogenizers (HPHs), particles impact with the solid surfaces of the homogenization device. This may lead to costly wear. For some applications, impact is also postulated to control the desired cell disruption. This contribution uses computational fluid dynamics to study impact of particles on solid surfaces in HPHs, as a step towards design optimization. Effects of particle diameter, density, homogenizing pressure, and impact distance are studied. Results show impacts both on the forcer and on the impingement ring. Few particles hit the forcer, at low velocities and with low angles (‘bracing impacts’). More particles hit the impact ring. These impacts are with higher velocities and typically occur head-on. The effect of both homogenizing pressure and impact ring distance scales according to a previously suggested stagnation pressure model. Results are discussed in the light of wear and cell disruption observations. |
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| ISSN: | 09603085 17443571 |
| DOI: | 10.1016/j.fbp.2024.11.001 |