| Publication type: | Conference other |
| Type of review: | Peer review (abstract) |
| Title: | Analysis of falling droplets into resting liquid and resulting shear stresses |
| Authors: | Hostettler, Marco Brunner, Daniel Rosenthal, Florian Clemens, Mirjam Koepf, Ellen Boiger, Gernot Kurt |
| et. al: | No |
| Proceedings: | Multiphysics 2020 |
| Page(s): | 50 |
| Conference details: | International Conference of Multiphysics, Online, 11-12 December 2020 |
| Issue Date: | 10-Dec-2020 |
| Publisher / Ed. Institution: | International Society of Multiphysics |
| ISSN: | 2409-1669 2409-7527 |
| Language: | English |
| Subjects: | Splashing; OpenFoam; Two-phase-flow; CFD |
| Subject (DDC): | 530: Physics |
| Abstract: | When a vial filled with liquid is transported it is exposed to external vibrations. These vibrations cause motion, which in turn can lead to splashing. This vibration induced splashing causes shear stresses and pressure forces within the fluid. When it comes to pharmaceutical fluids, it is essential to understand these shear- and pressure conditions because they can lead to the degradation of the drug. The presented study focuses on the effects of splashing in a liquid using computational fluid dynamics. Thereby, a falling droplet, which impacts into a surface of a resting liquid, is investigated. The impact and immersion of the droplet into the surface generates a complex agitation of the fluid and leads to the occurrence of shear stresses. These shear stresses depend on parameters such as falling height, droplet diameter and viscosity of the fluid. Using computational fluid dynamics said degrees of freedom were investigated in relation to associated shear conditions. The computational results show that larger droplet diameters as well as larger falling heights tend to primarily increase the strength of the occurring shear stresses. On the other hand increasing fluid viscosity decreases the penetration depth of the influence region while increasing the shear stress level. Therefore, viscosity has a more complex influence on the splashing than the other studied parameters. |
| Further description: | External R&D partner (co-authors Rosenthal, F., Clemens, M., Koepf, E.): F. Hoffmann-La Roche Ltd., Basel, Switzerland |
| URI: | https://static1.squarespace.com/static/5c9f89c101232c1d41297d67/t/5fd1bf288185f4776a0d1807/1607581490712/MULTIPHYSICS+2020+-+Abstracts.pdf https://digitalcollection.zhaw.ch/handle/11475/21174 |
| Fulltext version: | Published version |
| License (according to publishing contract): | Licence according to publishing contract |
| Departement: | School of Engineering |
| Organisational Unit: | Institute of Computational Physics (ICP) |
| Appears in collections: | Publikationen School of Engineering |
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Hostettler, M., Brunner, D., Rosenthal, F., Clemens, M., Koepf, E., & Boiger, G. K. (2020). Analysis of falling droplets into resting liquid and resulting shear stresses [Conference presentation]. Multiphysics 2020, 50. https://static1.squarespace.com/static/5c9f89c101232c1d41297d67/t/5fd1bf288185f4776a0d1807/1607581490712/MULTIPHYSICS+2020+-+Abstracts.pdf
Hostettler, M. et al. (2020) ‘Analysis of falling droplets into resting liquid and resulting shear stresses’, in Multiphysics 2020. International Society of Multiphysics, p. 50. Available at: https://static1.squarespace.com/static/5c9f89c101232c1d41297d67/t/5fd1bf288185f4776a0d1807/1607581490712/MULTIPHYSICS+2020+-+Abstracts.pdf.
M. Hostettler, D. Brunner, F. Rosenthal, M. Clemens, E. Koepf, and G. K. Boiger, “Analysis of falling droplets into resting liquid and resulting shear stresses,” in Multiphysics 2020, Dec. 2020, p. 50. [Online]. Available: https://static1.squarespace.com/static/5c9f89c101232c1d41297d67/t/5fd1bf288185f4776a0d1807/1607581490712/MULTIPHYSICS+2020+-+Abstracts.pdf
HOSTETTLER, Marco, Daniel BRUNNER, Florian ROSENTHAL, Mirjam CLEMENS, Ellen KOEPF und Gernot Kurt BOIGER, 2020. Analysis of falling droplets into resting liquid and resulting shear stresses. In: Multiphysics 2020 [online]. Conference presentation. International Society of Multiphysics. 10 Dezember 2020. S. 50. Verfügbar unter: https://static1.squarespace.com/static/5c9f89c101232c1d41297d67/t/5fd1bf288185f4776a0d1807/1607581490712/MULTIPHYSICS+2020+-+Abstracts.pdf
Hostettler, Marco, Daniel Brunner, Florian Rosenthal, Mirjam Clemens, Ellen Koepf, and Gernot Kurt Boiger. 2020. “Analysis of Falling Droplets into Resting Liquid and Resulting Shear Stresses.” Conference presentation. In Multiphysics 2020, 50. International Society of Multiphysics. https://static1.squarespace.com/static/5c9f89c101232c1d41297d67/t/5fd1bf288185f4776a0d1807/1607581490712/MULTIPHYSICS+2020+-+Abstracts.pdf.
Hostettler, Marco, et al. “Analysis of Falling Droplets into Resting Liquid and Resulting Shear Stresses.” Multiphysics 2020, International Society of Multiphysics, 2020, p. 50, https://static1.squarespace.com/static/5c9f89c101232c1d41297d67/t/5fd1bf288185f4776a0d1807/1607581490712/MULTIPHYSICS+2020+-+Abstracts.pdf.
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