4 papers
Investigating the mechanism by which finite-size heavy particles are entrained in turbulent open channel flow over a smooth surface
Tatia Bzikadze, Markus Weyrauch, Markus Uhlmann
The dynamics of entrainment of finite-size heavy particles in a turbulent open channel flow over a smooth surface are analyzed. Three types of simulations, namely with freely movin…
On the influence of forced homogeneous-isotropic turbulence on the settling and clustering of finite-size particles
Agathe Chouippe, Markus Uhlmann
We investigate the motion of heavy particles with a diameter of several multiples of the Kolmogorov length scale in the presence of forced turbulence and gravity, resorting to inte…
Incipient motion of a single particle on a regular substrate in an oscillatory flow
Timo J. J. M. van Overveld, Marco Mazzuoli, Markus Uhlmann +2
We investigate and model the initiation of motion of a single particle on a structured substrate within an oscillatory boundary layer flow, following a mechanistic approach. By det…
Chaotic and time-periodic edge states in square duct flow
Markus Scherer, Markus Uhlmann, Genta Kawahara
We analyse the dynamics within the stability boundary between laminar and turbulent square duct flow with the aid of an edge-tracking algorithm. As for the circular pipe, the edge…