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Eulerian and Lagrangian coherent structures in a positive surge
AbstractIn this paper, a positive surge is studied in the laboratory at Froude 1.5, using stereo time-resolved particle image velocimetry...
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Lagrangian-based spatial-temporal topological study on the evolution and migration of coherent structures in wall turbulence
In this work, we study the development, evolution, and migration of turbulent coherent structures in the turbulent boundary layer at Re τ = 630 using...
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Detection of vortical structures in sparse Lagrangian data using coherent-structure colouring
AbstractIn this study, vortical structures are detected on sparse Shake-The-Box data sets using the Coherent-Structure Colouring (CSC) algorithm. The...
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Lagrangian coherent structures and their heat-transport mechanism in the turbulent Rayleigh-Bénard convection
In this paper, we investigate the Lagrangian coherent structures (LCSs) and their heat-transport mechanism in turbulent Rayleigh-Bénard (RB)...
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Three-dimensional time-resolved Lagrangian flow field reconstruction based on constrained least squares and stable radial basis function
The three-dimensional time-resolved Lagrangian particle tracking (3D TR-LPT) technique has recently advanced flow diagnostics by providing high...
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An Overview of Coupled Lagrangian–Eulerian Methods for Ocean Engineering
Combining the strengths of Lagrangian and Eulerian descriptions, the coupled Lagrangian–Eulerian methods play an increasingly important role in...
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Precursor Coherent Flow Structures and Droplet Dispersion Relevant for the Stabilization of Swirling Lifted Spray Flame on a Bluff Body Burner
We investigate the precursor coherent flow structures and their interactions with spray that are responsible for the stabilization of lifted spray...
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Lagrangian analysis on structure evolution and mass transport of circular and noncircular turbulent synthetic jets
Fluid entrainment is of particular significance for the applications of synthetic jets in flow control. We investigate the structure evolution and...
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Identifying dominant flow features from very-sparse Lagrangian data: a multiscale recurrence network-based approach
AbstractRealistic fluid flow problems often require that Lagrangian tracers are deployed in a sparse or very-sparse manner, such as for oceanic and...
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An Eulerian–Eulerian–Lagrangian modeling of two-phase combustion
AbstractIn simulating two-phase combustion, most Reynolds-averaged Navier–Stokes (RANS) simulation and large-eddy simulation (LES) used...
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Application of Lagrangian coherent structures to Coulomb formation on elliptic orbit
Coulomb thrusting presents attractive prospects in many astronautical missions from the standpoint of close-proximity formation flying. In this...
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Numerical study of the near-wall vortical structures in particle-laden turbulent flow by a new vortex identification method-Liutex
This study investigates turbulent particle-laden channel flows using direct numerical simulations employing the Eulerian-Lagrangian method. A two-way...
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Lagrangian study of entrainment for confined vortex rings in dense suspensions using echo-LPT
AbstractAn ultrasound-based Lagrangian particle tracking (echo-LPT) method is used to investigate path-dependent quantities for confined vortex rings...
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Investigation of turbulent superstructures in Rayleigh–Bénard convection by Lagrangian particle tracking of fluorescent microspheres
We present spatially and temporally resolved velocity and acceleration measurements of turbulent Rayleigh–Bénard convection (RBC) in the entire fluid...
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Effect of the vortical structures on the hydrodynamic performance of a pitching hydrofoil
The objective is to study the vortical structural behaviors of a transient pitching hydrofoil and their effects on the hydrodynamic performance. The...
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Unified solid–fluid Lagrangian FEM model derived from hyperelastic considerations
When writing movement equations in stresses for continuous media, it makes no difference whether the media are solid or fluid. The fundamental...
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Evolution of the Lagrangian drift and vortex added-mass of a growing vortex ring
The vortex-based propulsive systems’ enhanced performance greatly contributes to the vortex added-mass effect, which was initially developed to...
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Coherent Particle Structures in High-Prandtl-Number Liquid Bridges
Clustering of small rigid spherical particles into particle accumulation structures (PAS) is studied numerically for a high-Prandtl-number (Pr = 68)...
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Effects of the slip wall on the drag and coherent structures of turbulent boundary layer
A comparative experiment by time-resolved particle image velocimetry (TRPIV) of the turbulent boundary layer (TBL) over a smooth surface and an...
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Coherent structure-turbulence interaction studied via a vortex column embedded in fine-scale turbulence
The coupling of large-scale coherent structures (CSs) with fine-scale turbulence and its possible relevance to cascade are explored via numerical...
