Effect of rheological properties of shear thinning liquids on curtain stability
| Autor: | Alireza Mohammad Karim, William B. Griffith, Saswati Pujari, Lorraine F. Francis, Wieslaw J. Suszynski, Marcio S. Carvalho |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Shear thinning 010304 chemical physics Deformation (mechanics) Applied Mathematics Mechanical Engineering General Chemical Engineering Mechanics Condensed Matter Physics Breakup 01 natural sciences Stability (probability) 010305 fluids & plasmas Volumetric flow rate Condensed Matter::Soft Condensed Matter Physics::Fluid Dynamics Viscosity Rheology 0103 physical sciences Newtonian fluid General Materials Science |
| Zdroj: | Journal of Non-Newtonian Fluid Mechanics. 263:69-76 |
| ISSN: | 0377-0257 |
| DOI: | 10.1016/j.jnnfm.2018.11.009 |
| Popis: | Recent results have shown that Newtonian liquid curtains become more stable as the viscosity rises. However, the effect of shear thinning rheology on the dynamics of curtain breakup is not well understood. The role of shear thinning behavior on liquid curtain stability was studied by high-speed visualization. The critical condition at the onset of curtain breakup was determined by identifying the flow rate below which the curtain broke. Curtain breakup was seen to begin with a hole initiated within the curtain. The results reveal that the dynamics of curtain breakup is governed by the shear viscosity at a characteristic deformation rate and, as in the Newtonian liquid case, the stability increases as the characteristic viscosity rises. |
| Databáze: | OpenAIRE |
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