Concept

Drag (physics)

Related publications (223)

Acousto-fluidic system assisting in-liquid self-assembly of microcomponents

Jürgen Brugger, Alcherio Martinoli, Massimo Mastrangeli, Rosario Maurizio Gullo, Loïc Jacot-Descombes, Grégory Mermoud, Helmut Knapp

In this paper, we present the theoretical background, design, fabrication and characterization of a micromachined chamber assisting the fluidic self-assembly of micro-electro-mechanical systems in a bulk liquid. Exploiting bubble-induced acoustic microstre ...

IOP Pulishing Ltd2013

Large-Eddy Simulation of Turbulent Boundary Layer Flow through Wind Turbines and Wind Farms

Yu-Ting Wu

In this thesis, we develop a new large-eddy simulation (LES) framework to simulate atmospheric boundary layer (ABL) flows through wind turbines and wind farms. A Lagrangian scale-dependent dynamic model is used to compute the Smagorinsky model coefficient ...

EPFL2013

Nanosecond Pulsed Plasma Actuators

Christoph Hollenstein, Philip Peschke

This paper summarizes the results of Plasmaero (EU project) partners on the characterization of plasma actuators based on nanosecond pulsed discharges. Results cover electrical aspects, optical discharge visualizations and measurements of the plasma-induce ...

2013

Simulation of Turbulent Flow Inside and Above Wind Farms: Model Validation and Layout Effects

Fernando Porté Agel, Yu-Ting Wu

A recently-developed large-eddy simulation framework is validated and used to investigate turbulent flow within and above wind farms under neutral conditions. Two different layouts are considered, consisting of thirty wind turbines occupying the same total ...

Springer Netherlands2013

Hydrodynamics of turbulent flows within arrays of circular cylinders

Ana Margarida Da Costa Ricardo

This article presents a detailed spatial description, employing Particle Image Velocimetry, of a flow within an array of rigid and emergent cylinders with varying density in controlled laboratory conditions. Its main objective is to discuss the spatial dis ...

TPU2013

Dynamic stall control by passive disturbance generators

Karen Ann J Mulleners

Passive cylindrical disturbance generators mounted near the leading edge of an airfoil significantly improved its performance under dynamic stall conditions. Time-resolved particle image velocimetry and simultaneous pressure measurements were conducted at ...

2013

Dynamic Stall Control by Passive Disturbance Generators

Karen Ann J Mulleners

2013

HYPER-FLEXIBLE 1-D SHAPE SENSOR

Dario Floreano, Stéphanie Lacour, Ramon Pericet Camara, Michal Karol Dobrzynski, Géraud L'Eplattenier

Here we describe a sensor capable of perceiving complex one-dimensional (1-D) shape of an underlying substrate in a static and dynamic manner. The sensor consists of seven, serially connected, hyper-flexible strain gauges, manufactured using stretchable-go ...

2013

Experimental investigation on the aerodynamic loads and wake flow features of a low aspect-ratio circular cylinder

Giacomo Valerio Iungo

An experimental investigation on the flow features of the wake generated from a circular cylinder with finite height and placed vertically on a plane is presented. Through force measurements the mean drag coefficient is found to be roughly invariant by var ...

Elsevier2012

Dam Break of Newtonian Fluids and Granular Suspensions

Nicolas Andreini

The objective of this thesis was to increase our understanding of two-phase geophysical flows (e.g. debris flows) by providing velocity profiles in idealized laboratory avalanches. To that end, we developed a new experimental platform made up of an incline ...

EPFL2012

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