Applicability of “lagrangian coherent structures” in predicting the movement of particles

Abstract

    In this paper, the scope of the “Lagrangian Coherent structures” in predicting the movement of floating particles will be investigated using numerical method. Case study is the transport of particles in the flow behind the circular cylindrical object, where the complex vortex forms. These particles were studied with different sizes and weights. The study used two methods, LCS and particle tracking to track the paths of the above particles. Based on the comparison of the two methods, the study figured out the size of the particles can be predicted using the LCS method. The results show that the LCS method can accurately predict the path of particles when the Stoke number is smaller than 0.1