Synthetic Lagrangian turbulence by generative diffusion models
Lagrangian turbulence lies at the core of numerous applied and fundamental problems
related to the physics of dispersion and mixing in engineering, biofluids, the atmosphere …
related to the physics of dispersion and mixing in engineering, biofluids, the atmosphere …
Investigation of the characteristics and mechanisms of the layer inversion in binary liquid–solid fluidized beds with coarse particles
This paper adopts an optimized Euler–Lagrange method proposed in our previous work to
study the characteristics and formation mechanisms of layer inversion in binary liquid–solid …
study the characteristics and formation mechanisms of layer inversion in binary liquid–solid …
Stochastic interpolation of sparsely sampled time series via multipoint fractional Brownian bridges
We propose and test a method to interpolate sparsely sampled signals by a stochastic
process with a broad range of spatial and/or temporal scales. To this end, we extend the …
process with a broad range of spatial and/or temporal scales. To this end, we extend the …
Lagrangian diffusion properties of a free shear turbulent jet
A Lagrangian experimental study of an axisymmetric turbulent water jet is performed to
investigate the highly anisotropic and inhomogeneous flow field. Measurements are …
investigate the highly anisotropic and inhomogeneous flow field. Measurements are …
Explicit construction of joint multipoint statistics in complex systems
Complex systems often involve random fluctuations for which self-similar properties in space
and time play an important role. Fractional Brownian motions, characterized by a single …
and time play an important role. Fractional Brownian motions, characterized by a single …
On small-scale and large-scale intermittency of Lagrangian statistics in canopy flow
R Shnapp - Journal of Fluid Mechanics, 2021 - cambridge.org
The interaction of fluids with surface-mounted obstacles in canopy flows leads to strong
turbulence that dominates dispersion and mixing in the neutrally stable atmospheric surface …
turbulence that dominates dispersion and mixing in the neutrally stable atmospheric surface …
Acceleration scaling and stochastic dynamics of a fluid particle in turbulence
R Zamansky - Physical Review Fluids, 2022 - APS
It is well known that the fluid-particle acceleration is intimately related to the dissipation rate
of turbulence, in line with the Kolmogorov assumptions. However, various experimental and …
of turbulence, in line with the Kolmogorov assumptions. However, various experimental and …
Lagrangian modeling of a nonhomogeneous turbulent shear flow: Molding homogeneous and isotropic trajectories into a jet
Turbulence is prevalent in nature and industry, from large-scale wave dynamics to small-
scale combustion nozzle sprays. In addition to the multiscale nonlinear complexity and both …
scale combustion nozzle sprays. In addition to the multiscale nonlinear complexity and both …
Multitime structure functions and the Lagrangian scaling of turbulence
We define and characterize multitime Lagrangian structure functions using data stemming
from two swirling flows with mean flow and turbulent fluctuations: a Taylor-Green numerical …
from two swirling flows with mean flow and turbulent fluctuations: a Taylor-Green numerical …
Single inertial particle statistics in turbulent flows from Lagrangian velocity models
We present the extension of a modeling technique for Lagrangian tracer particles [B.
Viggiano, J. Fluid Mech. 900, A27 (2020) JFLSA7 0022-1120 10.1017/jfm. 2020.495] which …
Viggiano, J. Fluid Mech. 900, A27 (2020) JFLSA7 0022-1120 10.1017/jfm. 2020.495] which …