Fisheries bycatch risk to marine megafauna is intensified in Lagrangian coherent structures. [PDF]
Proc Natl Acad Sci U S A, 2018 Significance Marine capture fisheries provide a valuable source of protein and are economically important in coastal communities. However, fisheries sustainability is impacted by incidental capture of nontarget species (bycatch), which remains a major ...
Scales KL +6 more
europepmc +2 more sources
Generalized Lagrangian Coherent Structures
Physica D: Nonlinear Phenomena, 2018 The notion of a Lagrangian Coherent Structure (LCS) is by now well established as a way to capture transient coherent transport dynamics in unsteady and aperiodic fluid flows that are known over finite time.
Irina I. Rypina +2 more
exaly +2 more sources
Coherent structures in wall-bounded turbulence
Anais da Academia Brasileira de Ciências, 2015 The inherent difficulty of understanding turbulence has led to researchers attacking the topic in many different ways over the years of turbulence research.
David J.C. Dennis
doaj +2 more sources
Defect-mediated dynamics of coherent structures in active nematics [PDF]
Nature Physics, 2021 Active fluids, such as cytoskeletal filaments, bacterial colonies and epithelial cell layers, exhibit distinctive orientational coherence, often characterized by nematic order and its breakdown, defined by the presence of topological defects. In contrast,
M. Serra +4 more
semanticscholar +1 more source
Soliton-like coherent structures: a key to opening the door to turbulence. [PDF]
Natl Sci RevChen S, Deng X, Lee C.
europepmc +2 more sources
Proper Orthogonal Decomposition Analysis of an Airfoil Performances under a Small Vortical Gust [PDF]
Journal of Applied Fluid Mechanics, 2022 This paper investigates the performance of a non-symmetric airfoil in a perturbed flow for a low Reynolds number by creating small vortical structures.
M. M. Oueslati +2 more
doaj +1 more source
Optimal eddy viscosity for resolvent-based models of coherent structures in turbulent jets [PDF]
Journal of Fluid Mechanics, 2020 Response modes computed via linear resolvent analysis of a turbulent mean-flow field have been shown to qualitatively capture characteristics of the observed turbulent coherent structures in both wall-bounded and free shear flows.
Ethan Pickering +4 more
semanticscholar +1 more source
Spectral proper orthogonal decomposition and resolvent analysis of near-wall coherent structures in turbulent pipe flows [PDF]
Journal of Fluid Mechanics, 2020 Direct numerical simulations, performed with a high-order spectral-element method, are used to study coherent structures in turbulent pipe flow at friction Reynolds numbers $Re_{\tau } = 180$ and $550$.
Leandra I. Abreu +4 more
semanticscholar +1 more source
Graph-Cut RANSAC: Local Optimization on Spatially Coherent Structures
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2021 We propose Graph-Cut RANSAC, GC-RANSAC in short, a new robust geometric model estimation method where the local optimization step is formulated as energy minimization with binary labeling, applying the graph-cut algorithm to select inliers. The minimized
D. Barath, Jiri Matas
semanticscholar +1 more source
Hierarchy of coherent structures and real-space energy transfer in turbulent channel flow
Journal of Fluid Mechanics, 2021 By analysing a database (Lozano-Durán & Jiménez, Phys. Fluids, vol. 26, 2014, 011702) of fully developed turbulent channel flow at the friction Reynolds number $Re_\tau =4179$, we investigate the sustaining mechanism of a hierarchy of coherent structures
Yutaro Motoori, S. Goto
semanticscholar +1 more source