Concept

Aileron (aéronautique)

Publications associées (9)

Physical Mechanism and Flow Control of Tip Vortex Cavitation

Occurrence of cavitation in hydraulic machines is a challenging issue because it is often accompanied with loss of efficiency, noise emissions, vibrations, and erosion damages. Tip vortices, in particular, are an ideal site for the development of cavitatio ...

EPFL2020

Wake flow in a wind farm during a diurnal cycle

Fernando Porté Agel, Mahdi Abkar, Ahmad Sharifi

The atmospheric boundary layer (ABL) undergoes substantial changes in its structure and dynamics in the course of a day due to the transient nature of forcing factors such as the surface fluxes of heat and momentum. The non-stationary nature of the mean wi ...

Taylor & Francis2016

Experimental Validation of the Wing-Aileron-Tab Combination Applied to an Actively Controlled Bridge Section Model

Alcherio Martinoli, Klara Maria Boberg, Glauco Feltrin

In this work we investigate the applicability of the wing-aileron-tab model for a bridge section model being actively controlled with leading and trailing edge flaps. The structural and aerodynamic model parameters have been extracted experimentally from a ...

2015

Comoving frames and symmetry-related motions in parallel shear flows

Tobias Klaus Kreilos

Parallel shear flows have continuous symmetries of translation in the downstream and spanwise directions. As a consequence, flow states that differ in their spanwise or downstream location but are otherwise identical are dynamically equivalent. In the case ...

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

Model Predictive Control for Gust Load Alleviation

Timm Faulwasser, Michael Köpf

For economical and ecological reasons aircraft are required to become more efficient by reducing fuel consumption and CO

_2

emissions. One way to achieve these objectives is to decrease the weight of the aircraft structure. The reduction is, however, limi ...

2012

Experimental Investigation of the Aeroelastic Stability of an Annular Compressor Cascade at Reverse Flow Conditions

Virginie Anne Chenaux

Compressor surge events are unsafe operating regimes yielding highly unsteady flow fields in which complex aeroelastic phenomena occur. If the blade flutter and forced response behaviour (i.e. aeroelastic stability) can be predicted reliably for normal flo ...

EPFL2012

Correction of wandering smoothing effects on static measurements of a wing-tip vortex

Giacomo Valerio Iungo

Wandering is a typical feature of wing-tip vortices and it consists in random fluctuations of the vortex core. Consequently, vortices measured by static measuring techniques appear to be more diffuse than in reality, so that a correction method is needed. ...

Springer Verlag2007

Surface Parametrization of a Francis Runner Turbine for Optimum Design

François Avellan

The aim of this paper is to apply a surface parameterization to a blade. This geometric representation should be used as a practical tool in the process of design optimization. Most parameterizations are based on blade section approaches. The parameters ar ...

International Association For Hydraulic Research2004

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Model Predictive Control for Gust Load Alleviation

Timm Faulwasser, Michael Köpf

For economical and ecological reasons aircraft are required to become more efficient by reducing fuel consumption and CO

_2

emissions. One way to achieve these objectives is to decrease the weight of the aircraft structure. The reduction is, however, limi ...

2012