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| Titel |
A method to calculate Finite-Time Lyapunov Exponents for inertial particles in incompressible flows |
| VerfasserIn |
D. Garaboa, V. Pérez-Muñuzuri |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
2198-5634
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics Discussions ; 2, no. 4 ; Nr. 2, no. 4 (2015-07-14), S.989-1005 |
| Datensatznummer |
250115180
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| Publikation (Nr.) |
 copernicus.org/npgd-2-989-2015.pdf |
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| Zusammenfassung |
| The present study aims to improve the calculus of Finite-Time Lyapunov
Exponents (iFTLEs) applied to describe the transport of inertial
particles in a fluid flow. To this aim, the deformation tensor used to
obtain the iFTLE is modified to take into account that the stretching
rate between particles separated by a certain distance is influenced
by the initial velocity of the particles. The advantages of this
improvement, if compared to the standard method (Shadden et al., 2005), are
discussed for the double-gyre flow and the meandering jet flow. The
new method allows to identify the initial velocity that inertial
particles must have in order to maximize their dispersion. |
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