High-velocity impact of solid objects on Non-Newtonian Fluids
| Autor: | Karla G. de Bruin, Thijs C. de Goede, Daniel Bonn |
|---|---|
| Přispěvatelé: | IoP (FNWI), Soft Matter (WZI, IoP, FNWI) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Dilatant Multidisciplinary Materials science Shear thinning media_common.quotation_subject lcsh:R lcsh:Medicine Mechanics Kinetic energy Inertia Non-Newtonian fluid Viscoelasticity Article Condensed Matter::Soft Condensed Matter Physics::Fluid Dynamics 03 medical and health sciences 030104 developmental biology 0302 clinical medicine Newtonian fluid lcsh:Q lcsh:Science 030217 neurology & neurosurgery Complex fluid media_common |
| Zdroj: | Scientific Reports, 9:1250. Nature Publishing Group Scientific Reports Scientific Reports, Vol 9, Iss 1, Pp 1-8 (2019) |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-018-37543-1 |
| Popis: | We investigate which property of non-Newtonian fluids determines the deceleration of a high-speed impacting object. Using high-speed camera footage, we measure the velocity decrease of a high-speed spherical object impacting a typical Newtonian fluid (water) as a reference and compare it with a shear thickening fluid (cornstarch) and a shear thinning viscoelastic fluid (a weakly cross-linked polymer gel). Three models describing the kinetic energy loss of the object are considered: fluid inertia, shear thickening and viscoelasticity. By fitting the three models to the experimental data, we conclude that the viscoelastic model works best for both the cornstarch and the polymer gel. Since the cornstarch is also viscoelastic, we conclude that the ability to stop objects of these complex fluids is given by their viscoelasticity rather than shear thickening or shear thinning. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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