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physics.flu-dyn2023
Lagrangian modeling of a non-homogeneous turbulent shear flow: Molding homogeneous and isotropic trajectories into a jet
Bianca Viggiano, Thomas Basset, Mickaël Bourgoin +4
Turbulence is prevalent in nature and industry, from large-scale wave dynamics to small-scale combustion nozzle sprays. In addition to the multi-scale nonlinear complexity and both…
physics.flu-dyn2021
Lagrangian diffusion properties of a free shear turbulent jet
Bianca Viggiano, Thomas Basset, Stephen Solovitz +7
A Lagrangian experimental study of an axisymmetric turbulent water jet is performed to investigate the highly anisotropic and inhomogeneous flow field. The measurements were conduc…
physics.flu-dyn2019
Modelling Lagrangian velocity and acceleration in turbulent flows as infinitely differentiable stochastic processes
Bianca Viggiano, Jan Friedrich, Romain Volk +3
We develop a stochastic model for Lagrangian velocity as it is observed in experimental and numerical fully developed turbulent flows. We define it as the unique statistically stat…