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http://hdl.handle.net/2445/139978
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DC Field | Value | Language |
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dc.contributor.advisor | Casademunt i Viader, Jaume | - |
dc.contributor.author | Armengol Collado, Josep-Maria | - |
dc.date.accessioned | 2019-09-13T14:28:51Z | - |
dc.date.available | 2019-09-13T14:28:51Z | - |
dc.date.issued | 2019-01 | - |
dc.identifier.uri | http://hdl.handle.net/2445/139978 | - |
dc.description | Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2019, Tutor: Jaume Casademunt Viader | ca |
dc.description.abstract | Turbulence in active fluids has been proposed as a new universality class of turbulence. However, the mechanisms governing these flows are poorly understood. In this work, we study numerically the formation of uni-dimensional patterns in a minimal model for an active polar nematic fluid, for arbitrary values of the ow alignment coeffcient v. In addition, we determine analytically the linear stability of the asymptotic states, as a function v. We describe the complete bifurcation diagram for uniform states in 1D and show the existence of transversal (2D) instabilities, in particular in the so-called flow alignment regime jvj > 1. This result shows that the secondary instabilities leading to turbulence are not specifc of the case v = 0, thus reinforcing the conclusion that active flows constitute a new universality class of turbulence. | ca |
dc.format.extent | 5 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | ca |
dc.rights | cc-by-nc-nd (c) Armengol, 2019 | - |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.source | Treballs Finals de Grau (TFG) - Física | - |
dc.subject.classification | Turbulència | cat |
dc.subject.classification | Formació de patrons (Física) | cat |
dc.subject.classification | Treballs de fi de grau | cat |
dc.subject.other | Turbulence | eng |
dc.subject.other | Pattern formation (Physical sciences) | eng |
dc.subject.other | Bachelor's theses | eng |
dc.title | Dynamics and stability of 1D patterns in active polar fluids | eng |
dc.type | info:eu-repo/semantics/bachelorThesis | ca |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca |
Appears in Collections: | Treballs Finals de Grau (TFG) - Física |
Files in This Item:
File | Description | Size | Format | |
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ARMENGOL COLLADO Josep-Maria.pdf | 570.03 kB | Adobe PDF | View/Open |
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