Concept

Centripetal force

Related publications (99)

Modeling of Unsteady Friction and Viscoelastic Damping in Piping Systems

François Avellan, Christophe Nicolet, Christian Landry, Andres Müller

In real systems, the phenomena, such as pipe-wall viscoelasticity, unsteady friction or fluid structure interaction induce additional damping and dispersion of transient pressure waves than that defined by classical waterhammer. In this paper, unsteady fri ...

International Association For Hydraulic Research2012

Integrated MEMS actuation for force spectroscopy in liquid

Jürgen Brugger, Rosario Maurizio Gullo, Jonas Gustav Henriksson

This work aims to develop arrays of individually actuated cell force spectroscopy probes. Cross et al. (Nat. Nanotech. 2007) have shown that human cells undergo substantial mechanical changes as they become cancerous. Cell force spectroscopy using AFM has ...

2011

Nonuniform and coherent motion of superconducting vortices in the picometer-per-second regime

Helmuth Berger, Hui Wang

We investigated vortex dynamics in a single-crystal sample of type-II superconductor NbSe2 using scanning tunneling microscopy at 4.2 K. The decay of the magnetic field at a few nT/s in our superconducting magnet induced the corresponding motion of vortice ...

2011

Experimental Contribution to the Mechanics of Herringbone Grooved Journal Air Bearings

Ivan Ognjanovic

Gas Lubricated Herringbone Grooved Journal Bearings (HGJB) have long been used in equipment such as navigation systems, optical scanners for laser printers and high speed cameras and disk spindle for flyhead testers. All such applications are characterized ...

EPFL2011

Non-retinotopic perceptual learning

Michael Herzog, Thomas Otto

Perceptual learning is usually specific for the encoded stimuli. For example, improvements in performance for a certain stimulus do not transfer if the stimulus is rotated by 90 degree or is presented at a different location. These findings are usually tak ...

the Association for Research in Vision and Ophthalmology2011

Hydrodynamics of High Specific Power Pumps for Off-Design Operating Conditions

Stefan Berten

Part load operation of high energy centrifugal pumps is associated with increased vibration levels which may adversely affect the machines operational safety. The main sources of vibrations in centrifugal pumps are of hydrodynamic nature. The interaction b ...

EPFL2010

Effects of filling in CoSb3: Local structure, band gap, and phonons from first principles

Nicola Marzari, Boris Kozinsky

We use ab initio computations to investigate the effect of filler ions on the properties of CoSb3 skutterudites. We analyze global and local structural effects of filling, using the Ba-filled system as an example. We show that the deformation of Sb network ...

2010

New Estimation of Electromagnetic Sound Power Radiated by a PM Machine: An Active and Passive Control Guideline

This paper presents an initial state of the art about the estimation of the sound power emitted by electrical machines. The paper proposes a new method, more accurate, to evaluate the sound power emitted by a PM machine by a 3D FEM mechanical analysis. It ...

2009

On surface tension modelling using the level set method

The paper describes and compares the performance of two options for numerically representing the surface tension force in combination with the level set interface-tracking method. In both models, the surface tension is represented as a body force, concentr ...

Wiley-Blackwell2009

Continuous separation of cells by balanced dielectrophoretic forces at multiple frequencies

Philippe Renaud, Thomas Michael Braschler, Nicolas Demierre

We present a particle-sorting device based on the opposition of dielectrophoretic forces. The forces are generated by an array of electrode chambers located in both sidewalls of a main flow channel. Particles with different dielectric response perceive dif ...

2008

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