Publications associées à Vortex-induced vibration

A linearized approach for the control of aerodynamic forces in flow past a square cylinder

François Gallaire, Edouard Boujo, Philippe Meliga

The analysis of Strykowski & Sreenivasan (JFM, 1990) provides experimental evidence that a small control cylinder suitably positioned in the wake of a main cylinder can alter vortex shedding close to the instability threshold. This problem was addressed fr ...

2014

Sensitivity of aerodynamic forces in laminar and turbulent flow past a square cylinder

François Gallaire, Edouard Boujo, Philippe Meliga

We use adjoint-based gradients to analyze the sensitivity of the drag force on a square cylinder. At Re = 40, the flow settles down to a steady state. The quantity of interest in the adjoint formulation is the steady asymptotic value of drag reached after ...

Amer Inst Physics2014

Sensitivity of aerodynamic forces in laminar and turbulent flow past a square cylinder

François Gallaire, Edouard Boujo, Philippe Meliga

2014

Large eddy simulation of vertical axis wind turbine wakes

Fernando Porté Agel, Sina Shamsoddin

In this study, large-eddy simulation (LES) is combined with a turbine model to investigate the wake behind a vertical-axis wind turbine (VAWT) in a three dimensional turbulent flow. Two methods are used to model the subgrid-scale (SGS) stresses: (a) the Sm ...

2014

Large eddy simulation of vertical axis wind turbine wakes

Fernando Porté Agel, Sina Shamsoddin

2014

Large Eddy Simulation of Vertical Axis Wind Turbine Wakes

Fernando Porté Agel, Sina Shamsoddin

In this study, large eddy simulation (LES) is combined with a turbine model to investigate the wake behind a vertical-axis wind turbine (VAWT) in a three-dimensional turbulent flow. Two methods are used to model the subgrid-scale (SGS) stresses: (a) the Sm ...

MDPI2014

Hydrodynamics of turbulent flows within arrays of circular cylinders

Ana Margarida Da Costa Ricardo

In rivers riparian vegetation can have not only strong interaction with the flow but also with the ecological services of the aquatic system. In wetlands and along riverbanks often tree-like vegetation with quite stiff trunks can be found. The study of the ...

EPFL - LCH2014

Unsteady Aerodynamics of Low-Pressure Steam Turbines Operating Under Low Volume Flow

Peter Ott, Benjamin Megerle, Ivan William McBean

Nonsynchronous 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 ro ...

American Society of Mechanical Engineers2014

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

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Vortex-induced vibration

A linearized approach for the control of aerodynamic forces in flow past a square cylinder

Sensitivity of aerodynamic forces in laminar and turbulent flow past a square cylinder

Sensitivity of aerodynamic forces in laminar and turbulent flow past a square cylinder

Large eddy simulation of vertical axis wind turbine wakes

Large eddy simulation of vertical axis wind turbine wakes

Large Eddy Simulation of Vertical Axis Wind Turbine Wakes

Hydrodynamics of turbulent flows within arrays of circular cylinders

Unsteady Aerodynamics of Low-Pressure Steam Turbines Operating Under Low Volume Flow

Sudden expansions in circular microchannels: flow dynamics and pressure drop

Experimental and Numerical Assessment of the Aeroelastic Stability of Blade Pair Packages

Graph Chatbot

Chattez avec Graph Search

Sensitivity of aerodynamic forces in laminar and turbulent flow past a square cylinder

Large eddy simulation of vertical axis wind turbine wakes

Large eddy simulation of vertical axis wind turbine wakes

Large Eddy Simulation of Vertical Axis Wind Turbine Wakes

Hydrodynamics of turbulent flows within arrays of circular cylinders

Unsteady Aerodynamics of Low-Pressure Steam Turbines Operating Under Low Volume Flow

Sensitivity of aerodynamic forces in laminar and turbulent flow past a square cylinder

A linearized approach for the control of aerodynamic forces in flow past a square cylinder

Sudden expansions in circular microchannels: flow dynamics and pressure drop

Experimental and Numerical Assessment of the Aeroelastic Stability of Blade Pair Packages