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Title: | Growth rates of viscoelastic vortex rings |
Author: | Clopés Llahí, Judit |
Director/Tutor: | Ortín, Jordi, 1959- |
Keywords: | Viscoelasticitat Vòrtexs Treballs de fi de grau Viscoelasticity Vortex-motion Bachelor's theses |
Issue Date: | Jun-2014 |
Abstract: | In this research, experimental studies were performed to investigate the mechanisms of vortex ring formation in a viscoelastic solution of CPyCl/NaSal [100:60] mM in distilled water. We used 2-dimensional particle image velocimetry (PIV) to characterize the transition from laminar to unstable regimes in a cylindrical oscillatory pipe ow, for a constant frequency of 5 Hz. Mea- surements reveal that the activation time of the vortex rings shows a dramatic dependence with the forcing amplitude, in contrast with the development time of the vortex rings, which seems to be independent of the forcing amplitude and remains constant with a value of 1.9 0.5 s. |
Note: | Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Any: 2014, Tutor: Jordi Ortín |
URI: | http://hdl.handle.net/2445/59763 |
Appears in Collections: | Treballs Finals de Grau (TFG) - Física |
Files in This Item:
File | Description | Size | Format | |
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TFG-Clopes-Llahi-Judit.pdf | 2.16 MB | Adobe PDF | View/Open |
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