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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water engineering : Lagrangian coherent structures in flows within arrays of wall-mounted emergent cylinders
Lagrangian coherent structures in flows within arrays of wall-mounted emergent cylinders
Author : ANA M. RICARDO(1), RICARDO CANELAS(2) & RUI M.L. FERREIRA(3)
ABSTRACT
A Smoothed Particle Hydrodynamics numerical database, validated experimentally, is explored to identify Lagrangian
Coherent Structures in a flow within an array of cylinders, simulating rigid and emergent vegetation conditions. The
methodology employed defines Lagrangian coherent structures as ridges in the field of the Finite-Time Lyapunov Exponents.
The results show that vortexes travel downstream following preferred paths through the array of cylinders. The pattern of
attracting LCS shows vortex merging in the inter-stem space. Such combined large-scale vortexes suggest the possibility
of existence of flow macro-scales.
File Size : 1,191,451 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water engineering
Date Published : 18/08/2015
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