RT Journal Article
T1 A method to calculate finite-time Lyapunov exponents for inertial particles in incompressible flows
A1 Garaboa Paz, Ángel Daniel
A1 Pérez Muñuzuri, Vicente
AB The present study aims to improve the calculus offinite-time Lyapunov exponents (FTLEs) applied to describethe transport of inertial particles in a fluid flow. To this aim,the deformation tensor is modified to take into account thatthe stretching rate between particles separated by a certaindistance is influenced by the initial velocity of the particles.Thus, the inertial FTLEs (iFTLEs) are defined in terms ofthe maximum stretching between infinitesimally close trajectories that have different initial velocities. The advantages ofthis improvement, if compared to the standard method (Shadden et al., 2005), are discussed for the double-gyre flow andthe meandering jet flow. The new method allows one to identify the initial velocity that inertial particles must have in order to maximize their dispersion.
PB Copernicus Publications
SN 1023-5809
YR 2015
FD 2015
LK http://hdl.handle.net/10347/21635
UL http://hdl.handle.net/10347/21635
LA eng
NO Garaboa-Paz, D. and Pérez-Muñuzuri, V. (2015). A method to calculate finite-time Lyapunov exponents for inertial particles in incompressible flows, Nonlin. Processes Geophys., 22, 571–577
NO This work was supported by the Ministerio de Economía y Competitividad under research grant CGL2013-45932-R
DS Minerva
RD 24 abr 2026