Publications related to Flow (mathematics)

Self-consistent model for the saturation mechanism of the response to harmonic forcing in the backward-facing step flow

François Gallaire, Vladislav Mantic Lugo

Certain flows denominated as amplifiers arc characterized by their global linear stability while showing large linear amplifications to sustained perturbations. As the forcing amplitude increases, a strong saturation of the response appears when compared t ...

Cambridge University Press2016

Dynamics of isolated confined air bubbles in liquid flows through circular microchannels: an experimental and numerical study

John Richard Thome, Navid Borhani, Mirco Magnini, Sepideh Khodaparast

Experimental and numerical studies are performed to characterise the dynamics of isolated confined air bubbles in laminar fully developed liquid flows within channels of diameters d = 0.5 mm and d = 1 mm. Water and glycerol are used as the continuous liqui ...

Springer Verlag2015

Turbulent scale resolving modelling of rotating stall in low-pressure steam turbines operated under low volume flow conditions

Peter Ott, Benjamin Megerle, Ivan William McBean

Non-synchronous excitation under low volume operation is a major risk to the mechanical integrity of last stage moving blades (LSMBs) in low-pressure (LP) steam turbines. These vibrations are often induced by a rotating aerodynamic instability similar to r ...

2015

Improved Variational Denoising of Flow Fields with Application to Phase-Contrast MRI Data

Michaël Unser, Nikolaos Stergiopoulos, Emrah Bostan, Orestis Vardoulis, Stamatios Lefkimmiatis

We propose a new variational framework for the problem of reconstructing flow fields from noisy measurements. The formalism is based on regularizers penalizing the singular values of the Jacobian of the field. Specifically, we rely on the nuclear norm. Our ...

Ieee-Inst Electrical Electronics Engineers Inc2015

Self-Consistent Mean Flow Description of the Nonlinear Saturation of the Vortex Shedding in the Cylinder Wake

François Gallaire, Cristobal Manuel Arratia Martinez, Vladislav Mantic Lugo

The Bénard–von Kármán vortex shedding instability in the wake of a cylinder is perhaps the best known example of a supercritical Hopf bifurcation in fluid dynamics. However, a simplified physical description that accurately accounts for the saturation ampl ...

2014

Influencing Flow Patterns and Bed Morphology in Open Channels and Rivers by Means of an Air-Bubble Screen

Anton Schleiss, Koen Blanckaert, Violaine Dugué

The ability of a bubble screen to redistribute the flow field and bed morphology in shallow rivers and open channels has been investigated in laboratory experiments. Rising air bubbles generated by a pressurized porous tube situated on the bed induced seco ...

American Society of Civil Engineers2014

Influence of snow cover properties on avalanche dynamics

Michael Lehning, Betty Sovilla, Walter Steinkogler

The destructive power of an avalanche depends, among other things, on the overall mass and the snow conditions in the avalanche path. So far, the knowledge on the effect of snow conditions on avalanche behavior is limited and largely qualitative. We invest ...

Elsevier Science Bv2014

Spatio-Temporal Regularization Of Flow-Fields

Michaël Unser, Nikolaos Stergiopoulos, Emrah Bostan, Pouya Dehghani Tafti, Orestis Vardoulis, Davide Piccini

We introduce a novel variational framework for the regularized reconstruction of time-resolved volumetric flow fields. Our objective functional takes the physical characteristics of the underlying flow into account in both the spatial and the temporal doma ...

IEEE2013

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Flow (mathematics)

Self-consistent model for the saturation mechanism of the response to harmonic forcing in the backward-facing step flow

Experimental study on the influence of abrupt slope changes on flow characteristics over stepped spillways

Too big to grow

Dynamics of isolated confined air bubbles in liquid flows through circular microchannels: an experimental and numerical study

Turbulent scale resolving modelling of rotating stall in low-pressure steam turbines operated under low volume flow conditions

Improved Variational Denoising of Flow Fields with Application to Phase-Contrast MRI Data

Self-Consistent Mean Flow Description of the Nonlinear Saturation of the Vortex Shedding in the Cylinder Wake

Influencing Flow Patterns and Bed Morphology in Open Channels and Rivers by Means of an Air-Bubble Screen

Influence of snow cover properties on avalanche dynamics

Spatio-Temporal Regularization Of Flow-Fields

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Chat with Graph Search

Self-Consistent Mean Flow Description of the Nonlinear Saturation of the Vortex Shedding in the Cylinder Wake

Turbulent scale resolving modelling of rotating stall in low-pressure steam turbines operated under low volume flow conditions

Improved Variational Denoising of Flow Fields with Application to Phase-Contrast MRI Data

Influence of snow cover properties on avalanche dynamics

Too big to grow

Experimental study on the influence of abrupt slope changes on flow characteristics over stepped spillways

Self-consistent model for the saturation mechanism of the response to harmonic forcing in the backward-facing step flow

Dynamics of isolated confined air bubbles in liquid flows through circular microchannels: an experimental and numerical study

Influencing Flow Patterns and Bed Morphology in Open Channels and Rivers by Means of an Air-Bubble Screen

Spatio-Temporal Regularization Of Flow-Fields