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Researcher Cañellas, Marc Àvila
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Dynamic Mode Competition Annular Flow ♦ Several Experimental Observation ♦ Concentric Cylinder ♦ Flow Instability ♦ Important Physic ♦ Full Navier Stokes Equation ♦ Taylor Couette Flow ♦ Great Scientific Challenge ♦ Observed Flow ♦ Different Configuration ♦ Equivariant Bifurcation ♦ Theoretical Picture ♦ Classical Taylor Couette Apparatus ♦ Canonical Example ♦ General Problem ♦ Chaotic Behavior ♦ Natural Flow ♦ Distinct Physical Instability Mechanism ♦ Normal Form Theory ♦ Complex Flow ♦ Accurate Spectral Computation ♦ Fundamental Laboratory Flow ♦ Centrifugal Instability
Abstract The understanding of the transition to chaotic behavior and turbulence in natural flows has been and continues to be a great scientific challenge. Due to the complexity of this general problem, there has been a need to seek more fundamental laboratory flows from which the important physics can be extracted. The swirling flow between two concentric cylinders, known as Taylor–Couette flow, has been used as canonical example for centrifugal instability and transition to turbulence following a progression of flow instabilities. The aim of the thesis has been to provide a deeper understanding of several experimental observations of spatio-temporally complex flows for which no theoretical picture was available. In order to accomplish this goal, accurate spectral computations of the full Navier–Stokes equations have been combined with equivariant bifurcation and normal form theories. The coupling of these tools not only aids in understanding the nature of the observed flows, but furnishes the setting to compare systems with distinct physical instability mechanisms and geometry. Different configurations of the classical Taylor–Couette apparatus have been considered
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Thesis
Publisher Date 2008-01-01