5 papers
Single inertial particle statistics in turbulent flows from Lagrangian velocity models
J. Friedrich, B. Viggiano, M. Bourgoin +2
We present the extension of a modeling technique for Lagrangian tracer particles [B. Viggiano et al., J. Fluid Mech.(2020), vol. 900, A27] which accounts for the effects of particl…
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…
Dynamic stall of an airfoil under tailored three-dimensional inflow conditions
Dominik Traphan, Tom T. B. Wester, Matthew Melius +3
Rotor blades of wind turbines in the atmospheric boundary layer regularly experience the aerodynamic phenomenon of dynamic stall consisting of a temporary overshoot of lift and det…
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…
On the decay of dispersive motions in the outer region of rough-wall boundary layers
Johan Meyers, Bharathram Ganapathisubramani, Raúl Bayoán Cal
In rough-wall boundary layers, wall-parallel non-homogeneous mean-flow solutions exist that lead to so-called dispersive velocity components and dispersive stresses. They play a si…