53 citations · 220 across the 12 of their papers we have counts for
13 papers
Linear feedback control of invariant solutions in channel flow
Moritz Linkmann, Florian Knierim, Stefan Zammert +1
Considering channel flow at Reynolds numbers below the linear stability threshold of the laminar profile as a generic example system showing a subcritical transition to turbulence…
Small scale exact coherent structures at large Reynolds numbers in plane Couette flow
Bruno Eckhardt, Stefan Zammert
The transition to turbulence in plane Couette flow and several other shear flows is connected with saddle node bifurcations in which fully 3-d, nonlinear solutions, so-called exact…
Analysis and modeling of localized invariant solutions in pipe flow
Paul Ritter, Stefan Zammert, Bruno Eckhardt +1
Turbulent spots surrounded by laminar flow are a landmark of transitional shear flows, but the dependence of their kinematic properties on spatial structure is poorly understood. W…
Transition to turbulence when the Tollmien-Schlichting and bypass routes coexist
Stefan Zammert, Bruno Eckhardt
Plane Poiseuille flow, the pressure driven flow between parallel plates, shows a route to turbulence connected with a linear instability to Tollmien-Schlichting (TS) waves, and ano…
Streamwise decay of localized states in channel flow
Stefan Zammert, Bruno Eckhardt
Channel flow, the pressure driven flow between parallel plates, has exact coherent structures that show various degrees of localization. For states which are localized in streamwis…
Harbingers and latecomers - The order of appearance of exact coherent structures in plane Poiseuille flow
Stefan Zammert, Bruno Eckhardt
The transition to turbulence in plane Poiseuille flow (PPF) is connected with the presence of exact coherent structures. In contrast to other shear flows, PPF has a number of diffe…
Transition in the asymptotic suction boundary layer over a heated plate
Stefan Zammert, Nicolas Fischer, Bruno Eckhardt
The asymptotic suction boundary layer (ASBL) is a parallel shear flow that becomes turbulent in a bypass transition in parameter regions where the laminar profile is stable. We her…
Bypass transition and subcritical turbulence in plane Poiseuille flow
Stefan Zammert, Bruno Eckhardt
Plane Poiseuille flow shows turbulence at a Reynolds number that is lower than the critical one for the onset of Tollmien-Schlichting waves. The transition to turbulence follows th…
Crisis bifurcations in plane Poiseuille flow
Stefan Zammert, Bruno Eckhardt
Many shear flows follow a route to turbulence that has striking similarities to bifurcation scenarios in low-dimensional dynamical systems. Among the bifurcations that appear, cris…
A spotlike edge state in plane Poiseuille flow
Stefan Zammert, Bruno Eckhardt
We study the laminar turbulent boundary in plane Poiseuille flow at and using the technique of edge tracking. For large computational domains the attracting state…
Streamwise and doubly-localised periodic orbits in plane Poiseuille flow
Stefan Zammert, Bruno Eckhardt
We study localised exact coherent structures in plane Poiseuille flow that are relative periodic orbits. They are obtained from extended states in smaller, periodically continued d…
Periodically bursting edge states in plane Poiseuille flow
Stefan Zammert, Bruno Eckhardt
We investigate the laminar-turbulent boundary in plane Poiseuille flow by the method of edge tracking. In short and narrow computational domains we find for a wide range in Reynold…
Symmetry related dynamics in parallel shear flows
Tobias Kreilos, Stefan Zammert, Bruno Eckhardt
Parallel shear flows come with continuous symmetries of translation in the downstream and spanwise direction. As a consequence, flow states that differ in their spanwise or downstr…