7 papers · 1 filter
Lagrangian Curvature Statistics from Gaussian Subensembles in Turbulent Flows
Yasmin Hengster, Johannes Bosbach, Daniel Schanz +2
A salient feature of fully turbulent flows far from onset is the intermittent occurrence of extreme fluctuations at small spatial and temporal scales. These have a qualitative and…
No need to stay positive: a practical approach to direct numerical simulations of elastic turbulence
Damiano Capocci, Moritz Linkmann, Alexander Morozov
Successfully performing direct numerical simulations of polymeric flows remains a major challenge in computational fluid mechanics. In addition to the velocity field, such simulati…
TURB-MHD: an open-access database of forced homogeneous magnetohydrodynamic turbulence
Damiano Capocci, Luca Biferale, Fabio Bonaccorso +1
We present TURB-MHD, a database formed by six datasets of three-dimensional incompressible homogeneous magnetohydrodynamic turbulence maintained by a large-scale random forcing wit…
State estimation in homogeneous isotropic turbulence using super-resolution with a 4DVar training algorithm
Markus Weyrauch, Moritz Linkmann, Jacob Page
Variational data assimilation and machine-learning based super-resolution are two alternative approaches to state estimation in turbulent flows. The former is an optimisation probl…
Subcritical transition and multistability in liquid metal magnetoconvection with sidewalls
Matthew McCormack, Andrei Teimurazov, Olga Shishkina +1
The motionless conducting state of liquid metal convection with an applied vertical magnetic field confined in a vessel with insulating side walls becomes linearly unstable to wall…
Narwhals and their blessings: exact coherent structures of elastic turbulence in channel flows
Alexander Morozov, Martin Lellep, Damiano Capocci +1
Solutions of long, flexible polymer molecules are complex fluids that simultaneously exhibit fluid-like and solid-like behaviour. When subjected to external flows, dilute polymer s…