Concept

Intermittency

Related publications (23)

Increasing Lifetimes and the Growing Saddles of Shear Flow Turbulence

In linearly stable shear flows, turbulence spontaneously decays with a characteristic lifetime that varies with Reynolds number. The lifetime sharply increases with Reynolds number so that a possible divergence marking the transition to sustained turbulenc ...

American Physical Society2014

Edge states for the turbulence transition in the asymptotic suction boundary layer

Tobias Schneider, Tobias Klaus Kreilos

We demonstrate the existence of an exact invariant solution to the Navier-Stokes equations for the asymptotic suction boundary layer. The identified periodic orbit with a very long period of several thousand advective time units is found as a local dynamic ...

Cambridge University Press2013

The effect of fractionality nature in differences between computer simulation and experimental results of a chaotic circuit

Salman Faraji

In practice, some differences are usually observed between computer simulation and experimental results of a chaotic circuit. In this paper, it is tried to obtain computer simulation results having more correlation with those obtained in practice by using ...

Versita2013

Periodic orbits near onset of chaos in plane Couette flow

Tobias Klaus Kreilos

We track the secondary bifurcations of coherent states in plane Couette flow and show that they undergo a periodic doubling cascade that ends with a crisis bifurcation. We introduce a symbolic dynamics for the orbits and show that the ones that exist fall ...

2012

Boundary mixing in lakes: 2. Combined effects of shear- and convectively induced turbulence on basin-scale mixing

Alfred Johny Wüest

A detailed comparison of results from a numerical three-dimensional hydrostatic lake model with high-resolution observations of the vertical structure of the turbulent bottom boundary layer (BBL) in a medium-size lake (Lake Alpnach, Switzerland) is provide ...

Amer Geophysical Union2011

Localized edge states for the transition to turbulence in shear flows

Tobias Schneider

In parallel shear flows like pipe flow or plane Couette flow, laminar and turbulent dynamics coexist. The boundary between the two types of dynamics shows up clearly in studies that monitor the life time of a perturbation, i.e. the time it takes to relamin ...

Springer2010

Gyrokinetic simulations of turbulent transport: size scaling and chaotic behaviour

Laurent Villard, Stephan Brunner, Trach-Minh Tran, Alberto Bottino, Sébastien Jolliet, Ben McMillan, Xavier Lapillonne, Thibaut Vernay

Important steps towards the understanding of turbulent transport have been made with the development of the gyrokinetic framework for describing turbulence and with the emergence of numerical codes able to solve the set of gyrokinetic equations. This paper ...

IOP Publishing2010

Gyrokinetic simulations of turbulent transport: size scaling and chaotic behaviour

Laurent Villard, Stephan Brunner, Trach-Minh Tran, Alberto Bottino, Sébastien Jolliet, Ben McMillan, Xavier Lapillonne, Thibaut Vernay

2010

State Space Properties of Transitional Pipe Flow

Tobias Schneider

Transition to turbulence in pipe flow has puzzled scientists since the studies of Hagen, Poiseuille and, most prominently, Osborne Reynolds in the nineteenth century. Much of the difficulty in understanding the transition is connected with the linear stabi ...

2007

Approximately periodic time series and nonlinear structures

In this thesis a previously developed framework for modelling diversity of approximately periodic time series is considered. In this framework the diversity is modelled deterministically, exploiting the irregularity of chaos. This is an alternative to othe ...

EPFL2005

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