Publications associées à State Space Properties of Transitional Pipe Flow

Controlled reattachment in separated flows: a variational approach to recirculation length reduction

A variational technique is used to derive analytical expressions for the sensitivity of recirculation length to steady forcing in separated flows. Linear sensitivity analysis is applied to the two-dimensional steady flow past a circular cylinder for Reynol ...

Cambridge University Press2014

An Intercomparison of LES Subgrid-Scale Models for Simulations of Slope Flows

Jiannong Fang, Marc Parlange, Marco Giovanni Giometto

We propose an inter-comparison of Smagorinsky type subgrid-scale models for the simulation of high Reynolds number katabatic flows, with the purpose of testing the validity of some of the model's assumptions for the considered application. Katabatic flows ...

2014

Sudden expansions in circular microchannels: flow dynamics and pressure drop

John Richard Thome, Navid Borhani, Sepideh Khodaparast

Micro particle shadow velocimetry is used to study the flow of water through microcircular sudden expansions of ratios e = 1.51 and e = 1.96 for inlet Reynolds numbers Re (d) < 120. Such flows give rise to annular vortices, trapped downstream of the expans ...

Springer Heidelberg2014

On the density of shear transformations in amorphous solids

Matthieu Wyart, Jie Lin

We study the stability of amorphous solids, focussing on the distribution P(x) of the local stress increase x that would lead to an instability. We argue that this distribution behaves as , where the exponent θ is larger than zero if the elastic interactio ...

EDP Sciences2014

Floquet theory for seasonal environmental forcing of spatially explicit waterborne epidemics

Andrea Rinaldo, Enrico Bertuzzo, Lorenzo Mari, Marino Gatto

The transmission of waterborne pathogens is a complex process that is heavily linked to the spatial characteristics of the underlying environmental matrix as well as to the temporal variability of the relevant hydroclimatological drivers. In this work, we ...

Springer Heidelberg2014

Second-order sensitivity of parallel shear flows and optimal spanwise-periodic flow modifications

François Gallaire, Edouard Boujo, Andrea Fani

We perform a second-order sensitivity analysis of the linear temporal stability of a parallel flow subject to small spanwise periodic modification. The need for a second-order analysis results from the fact that spanwise-periodic flow modifications have a ...

2014

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

Turbulent regimes in the tokamak scrape-off layer

Paolo Ricci, Joaquim Loizu Cisquella, Sébastien Jolliet, Federico David Halpern, Annamaria Mosetto

The non-linear turbulent regimes in the tokamak scrape-off layer (SOL) are identified according to the linear instability responsible for the perpendicular transport. Four regions of the SOL operational parameters are determined where turbulence is driven ...

American Institute of Physics2013

A General Family of Morphed Nonlinear Phase Oscillators with Arbitrary Limit Cycle Shape

Auke Ijspeert, Mostafa Ajallooeian, Jesse van den Kieboom

We present a general family of nonlinear phase oscillators which can exhibit arbitrary limit cycle shapes and infinitely large basins of attraction. This general family is the superset of familiar control methods like PD-control over a periodic reference, ...

Elsevier Science Bv2013

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State Space Properties of Transitional Pipe Flow

Controlled reattachment in separated flows: a variational approach to recirculation length reduction

An Intercomparison of LES Subgrid-Scale Models for Simulations of Slope Flows

Sudden expansions in circular microchannels: flow dynamics and pressure drop

On the density of shear transformations in amorphous solids

Floquet theory for seasonal environmental forcing of spatially explicit waterborne epidemics

Second-order sensitivity of parallel shear flows and optimal spanwise-periodic flow modifications

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

Turbulent regimes in the tokamak scrape-off layer

A General Family of Morphed Nonlinear Phase Oscillators with Arbitrary Limit Cycle Shape

Hydrodynamics of turbulent flows within arrays of circular cylinders

Graph Chatbot

Chattez avec Graph Search

Controlled reattachment in separated flows: a variational approach to recirculation length reduction

An Intercomparison of LES Subgrid-Scale Models for Simulations of Slope Flows

Sudden expansions in circular microchannels: flow dynamics and pressure drop

On the density of shear transformations in amorphous solids

Floquet theory for seasonal environmental forcing of spatially explicit waterborne epidemics

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

Turbulent regimes in the tokamak scrape-off layer

Hydrodynamics of turbulent flows within arrays of circular cylinders

Second-order sensitivity of parallel shear flows and optimal spanwise-periodic flow modifications

A General Family of Morphed Nonlinear Phase Oscillators with Arbitrary Limit Cycle Shape