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Affichage de 1191 à 1200 sur 1999

  • Article dans une revue

Experimental Investigations on Oscillatory Couette Taylor Flow Wall Shear Stress Behavior using Electrochemical Technique: Low Modulation Effect

Emna Berrich, Fethi Aloui, Jack M Legrand

In the simplest and original case of study of the Taylor–Couette TC problems, the fluid is contained between a fixed outer cylinder and a concentric inner cylinder which rotates at constant angular velocity. Much of the works done has been concerned on steady rotating cylinder(s) i.e. rotating…

Journal of Applied Fluid Mechanics, 2016, 9 (1), pp.147-154. ⟨10.36884/jafm.9.SI1.26163⟩. ⟨hal-02545268⟩

  • Article dans une revue

Robust speaker identification system over AWGN channel using improved features extraction and efficient SAD algorithm with prior SNR estimation

Riadh Ajgou, Salim Sbaa, Said Ghendir, Ali Chemsa, Abdelmalik Taleb-Ahmed

This paper motivates the combination of Autoregressive (AR) parameters and Mel Frequency Cepstral Coefficients (MFCC) features for remote robust text-independent speaker identification. All speaker identification techniques start by converting the raw speech signal into a sequence of acoustic…

International Journal of Circuits, Systems and Signal Processing, 2016, 10, pp.108-118. ⟨hal-03664850⟩

  • Article dans une revue

Local stability of discrete-time TS fuzzy systems

Zsofia Lendek, Jimmy Lauber

This paper considers local stability analysis of discrete-time Takagi-Sugeno fuzzy systems, for which classically in the TS literature only global stability is considered. Using a common quadratic and nonquadratic Lyapunov function, respectively, LMI conditions are developed to establish local…

IFAC-PapersOnLine, 2016, 49 (5), pp.7-12. ⟨10.1016/j.ifacol.2016.07.081⟩. ⟨hal-03669983⟩

  • Article dans une revue

Experimental Study of Heat and Mass Transfer for Liquid Film Evaporation along a Vertical Plate Covered With a Porous Layer

Amine Terzi, Sadok Ben Jabrallah, Souad Harmand

In this paper, we realized an Experimental study of heat and mass transfer for liquid evaporation along a vertical plate covered with a porous layer. To develop this study, an experimental dispositive was realized. To highlight the effect of the addition of a porous layer on the phenomenon of…

Journal of Applied Fluid Mechanics, 2016, Selected papers from the 7thInternational Exergy, Energy and Environment Symposium, IEEE7-2015, 9 (Special issue 1), pp.113-120. ⟨10.36884/jafm.9.SI1.25821⟩. ⟨hal-03447185⟩

  • Article dans une revue

Experimental study on the stability of an impedance-type force-feedback architecture based on an augmented-state observer for a haptic system under time delay using a LMI approach

Quoc Viet Dang, Laurent Vermeiren, Antoine Dequidt, Michel Dambrine

One of the most important performance measures of a haptic interface may be characterized by its behaviour in the implementation of a virtual wall in terms of the biggest value of the virtual stiffness that still leaves the device stable. This value depends on many factors including time delays and…

Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, 2016, 230 (1), pp.58-71. ⟨10.1177/0959651815611566⟩. ⟨hal-03426981⟩

  • Article dans une revue

Increased antagonist muscle activity in cervical SCI patients suggests altered reciprocal inhibition during elbow contractions

Sylvain Cremoux, David Amarantini, Jessica Tallet, Fabien Dal Maso, Eric Berton

Objective: After spinal cord injury (SCI), the antagonist muscles activation is increased during voluntary contractions and reflex conditioning protocols. This increase can be the result of both muscle atrophy and reciprocal facilitation mechanism. It remains however unclear to what extent…

Clinical Neurophysiology, 2016, 127 (1), pp.629-634. ⟨10.1016/j.clinph.2015.03.016⟩. ⟨hal-01454735⟩

  • Article dans une revue

A new reduced model of scavenging to optimize cylinder design

Stéphanie Cagin, Xavier Fischer, Eric Delacourt, Nachida Bourabaa, Céline Morin, Daniel Coutellier, Bertrand Carre, Sylvain Loumé

This paper presents the development of a new scavenging model to optimize cylinder design. The developed model explicitly integrates some of the cylinder’s design and environmental variables to describe flows during the scavenging process. Then, based on the reduced model, an optimization phase was…

SIMULATION: Transactions of The Society for Modeling and Simulation International, 2016, 92 (6), pp.507-520. ⟨10.1177/0037549716644516⟩. ⟨hal-01330975⟩

  • Article dans une revue

Turbulent Flows Structures Crossing Conical Diffusers: Angle Effect Analysis using PIV Technique and POD for Post-Processing

Emna Berrich, Fethi Aloui, D Pierrat, L Gros, Anthony Couzinet, Jack Legrand

In this work, we investigated experimentally the hydrodynamics of flows crossing conical diffusers. On our previous work (Aloui et al., 2011), CFD turbulent models were validated for flows crossing the critical angle (2α=16°). Indeed, the PIV data base constructed was exploited to validate a…

Journal of Applied Fluid Mechanics, 2016, 9 (Special Issue 1), pp.19-29. ⟨10.36884/JAFM.9.SI1.25827⟩. ⟨hal-01349723⟩

  • Article dans une revue

Scavenging Process Analysis in a 2-Stroke Engine by CFD Approach for a Parametric 0D Model Development

Stéphanie Cagin, Nachida Bourabaa, Eric Delacourt, Céline Morin, Xavier Fischer, Daniel Coutellier, Bertrand Carre, Sylvain Loumé

This paper presents a method to improve cylinder design of 2-stroke auto-ignition engine based on a CFD (Computational Fluid Dynamics) study of internal flows in the chamber and an unsteady global 0D parametric approach. In 2-stroke engine, scavenging process plays an important role regarding…

Journal of Applied Fluid Mechanics, 2016, 9 (1), pp.69-80. ⟨10.36884/jafm.9.SI1.26397⟩. ⟨hal-01330948⟩

  • Article dans une revue

Turbulent Plane Impinging Jet-Physical Insight and Turbulence Modeling

Mahmoud Charmiyan, Ahmed-Reza Azimian, Laurent Keirsbulck, Ebrahim Shirani, Fethi Aloui

A 3D numerical simulation using large eddy simulation (LES) method is performed for a submerged turbulent water slot jet impinging normally on a flat plate with a nozzle-to-plate distance of 10 jet width and a Reynolds number of 16000 and the results are compared with the existing experimental data…

Journal of Applied Fluid Mechanics, 2016, 9 (1), pp.11-17. ⟨10.36884/jafm.9.SI1.25825⟩. ⟨hal-03448221⟩