36 citations · 106 across the 7 of their papers we have counts for
7 papers
Multiple states of turbulence at vanishing inertia
Ziyin Lu, Björn Hof
Based on everyday experience fluid flows tend to be ordered and quiescent if inertial forces are low and held in check by viscosity. This intuition spectacularly fails in the case…
The phase transition to turbulence in spatially extended shear flows
Lukasz Klotz, Gregoire Lemoult, Kerstin Avila +1
Directed percolation(DP) has recently emerged as a possible solution to the century old puzzle surrounding the transition to turbulence. Multiple model studies reported DP exponent…
Relaminarization of pipe flow by means of 3d-printed shaped honeycombs
Jakob Kühnen, Davide Scarselli, Björn Hof
Based on a novel control scheme, where a steady modification of the streamwise velocity profile leads to complete relaminarization of initially fully turbulent pipe flow, we invest…
Relaminarising pipe flow by wall movement
Davide Scarselli, Jakob Kühnen, Björn Hof
Following the recent observation that turbulent pipe flow can be relaminarised by a relatively simple modification of the mean velocity profile, we here carry out a quantitative ex…
Relaminarization by steady modification of the streamwise velocity profile in a pipe
J. Kühnen, D. Scarselli, M. Schaner +1
We show that a rather simple, steady modification of the streamwise velocity profile in a pipe can lead to a complete collapse of turbulence and the flow fully relaminarizes. Two d…
Heteroclinic path to spatially localized chaos in pipe flow
Nazmi Burak Budanur, Björn Hof
In shear flows at transitional Reynolds numbers, localized patches of turbulence, known as puffs, coexist with the laminar flow. Recently, Avila et al., Phys. Rev. Let. 110, 224502…
Experimental investigation of transitional flow in a toroidal pipe
J. Kühnen, M. Holzner, B. Hof +1
The flow instability and further transition to turbulence in a toroidal pipe (torus) with curvature (tube-to-coiling diameter) 0.049 is investigated experimentally. The flow inside…