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TURB-Lagr. A database of 3d Lagrangian trajectories in homogeneous and isotropic turbulence

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arxiv 2303.08662 v3 pith:X6WVKHHT submitted 2023-03-15 physics.flu-dyn nlin.CDphysics.comp-ph

classification physics.flu-dynnlin.CDphysics.comp-ph
keywords turb-lagrlagrangiantrajectoriesturbulencedatadatabaseequationshomogeneous
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We present TURB-Lagr, a new open database of 3d turbulent Lagrangian trajectories, obtained by Direct Numerical Simulations (DNS) of the original Navier-Stokes equations in the presence of a homogeneous and isotropic forcing. The aim is to provide the community interested in data-assimilation and/or Lagrangian-properties of turbulence a new testing-ground made of roughly 300K different Lagrangian trajectories. TURB-Lagr data are influenced by the strong non-Gaussian fluctuations characteristic of turbulence and by the rough and non differentiable fields. In addition, coming from fully resolved numerical simulations of the original partial differential equations, they offer the possibility to apply a wide range of approaches, from equation-free to physics-based models. TURB-Lagr data are reachable at http://smart-turb.roma2.infn.it

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Deformation of ellipsoidal droplets in homogeneous and isotropic turbulence

    physics.flu-dyn 2025-06 conditional novelty 6.0 of 10

    Ellipsoidal models with capillary-number-dependent coefficients match fully resolved droplet deformation statistics in turbulence up to Ca=0.4, including heavy tails and skewness reversal.

  2. TURB-Smoke. A database of Lagrangian pollutants emitted from point-sources and dispersed in turbulent flows

    physics.flu-dyn 2025-07 conditional novelty 5.0 of 10

    New public database: DNS-generated Lagrangian particle trajectories and 2D/3D concentration fields from five point sources in turbulence at five wind strengths, for source-tracking and olfactory search benchmarks.

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