Highly efficient computation of Finite-Time Lyapunov Exponents (FTLE) on GPUs based on three-dimensional SPH datasets

T.F. Dauch,T. Rapp,G. Chaussonnet,S. Braun,M.C. Keller, J. Kaden,R. Koch,Carsten Dachsbacher,H.-J. Bauer

Computers & Fluids（2018）

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摘要

•Interactive evaluation of Finite-Time Lyapunov Exponents (FTLE) based on SPH results.•GPU optimized highly efficient code for FTLE evaluation in 2D and 3D.•FTLE-ridges of simulated vortex street in agreement with experimental findings (2D).•FTLE-ridges in vicinity of surface mounted cylinder reflect wake structure (3D).

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关键词

Finite-Time Lyapunov Exponent,FTLE,Lagrangian Coherent Structures,CUDA,GPU,Smoothed particle hydrodynamics

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