210 citations · 1.1k across the 24 of their papers we have counts for
17 papers · 1 filter
Dynamo enhancement and mode selection triggered by high magnetic permeability
Sophia Kreuzahler, Yannick Ponty, Nicolas Plihon +2
We present results from consistent dynamo simulations, where the electrically conducting and incompressible flow inside a cylinder vessel is forced by moving impellers numerically…
Abrupt growth of large aggregates by correlated coalescences in turbulent flow
Jeremie Bec, Samriddhi Sankar Ray, Ewe Wei Saw +1
Smoluchowski's coagulation kinetics is here shown to fail when the coalescing species are dilute and transported by a turbulent flow. The intermittent Lagrangian motion involves co…
Concentrations of inertial particles in the turbulent wake of an immobile sphere
Holger Homann, Jérémie Bec
Direct numerical simulations are used to study the interaction of a stream of small heavy inertial particles with the laminar and turbulent wakes of an immobile sphere facing an in…
Clustering, fronts, and heat transfer in turbulent suspensions of heavy particles
Jeremie Bec, Holger Homann, Giorgio Krstulovic
Heavy inertial particles transported by a turbulent flow are shown to concentrate in the regions where an advected passive scalar, such as temperature, displays very strong front-l…
Gravity-driven enhancement of heavy particle clustering in turbulent flow
Jeremie Bec, Holger Homann, Samriddhi Sankar Ray
Heavy particles suspended in a turbulent flow settle faster than in a still fluid. This effect stems from a preferential sampling of the regions where the fluid flows downward and…
Numerical study of impeller-driven von Karman flows via a volume penalization method
Sophia Kreuzahler, Daniel Schulz, Holger Homann +2
The von Karman flow apparatus produces a highly turbulent flow inside a cylinder vessel driven by two counter-rotating impellers. Over more than two decades, this experiment has be…