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Bachelor thesis . 2014
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Bachelor thesis . 2014
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Bachelor thesis . 2014
License: CC BY NC ND
Data sources: Recolector de Ciencia Abierta, RECOLECTA
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Growth rates of viscoelastic vortex rings

descriptionPublicationkeyboard_double_arrow_right Bachelor thesis 01 Jan 2014 Spain English
Authors: Clopés Llahí, Judit;

handle: 2445/59763

Growth rates of viscoelastic vortex rings

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.

Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Any: 2014, Tutor: Jordi Ortín

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Spain
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Keywords

Bachelor's thesis, Vòrtexs, Bachelor's theses, Viscoelasticitat, Viscoelasticity, Treballs de fi de grau, Vortex-motion

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