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Energy decay in vortices
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Numerical Analysis.
2011 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The long time energy decay of vortices for several different initial flow scenarios is investigated both theoretically and numerically. The theoretical analysis is based on the energy method. Numerical calculations are done by solving the compressible Navier-Stokes equations using a high order stable finite difference method. The simulations verify the theoretical conclusion that vortices decay at a slow rate compared to other types of flows. Several Reynolds numbers and grid sizes in both two and three dimensions are considered.

Place, publisher, year, edition, pages
2011.
Series
UPTEC F, ISSN 1401-5757 ; 11 031
Keyword [en]
Navier-Stokes, Energy method, Energy decay, Vortices, Vortex, Fluid computations
Identifiers
URN: urn:nbn:se:uu:diva-154594OAI: oai:DiVA.org:uu-154594DiVA: diva2:421263
Educational program
Master Programme in Engineering Physics
Uppsok
Technology
Supervisors
Examiners
Available from: 2011-06-14 Created: 2011-06-08 Last updated: 2011-06-14Bibliographically approved

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