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List of EUROMECH Colloquia in 2004

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• [448] Vortices and field interactions

  Date:	6 September 2004 - 10 September 2004
  Location:	ESPCI, 10 rue Vauquelin 75005 Paris France
  Contact:	Chairpersons: Dr. Maurice Rossi Laboratoire de Modélisation en Mécanique, CNRS (UMR No. 7607), Université Pierre et Marie Curie case 162, 4, Place Jussieu 75252, Paris cedex 05, France e-mail: maur@ccr.jussieu.fr Dr. Andrew Gilbert School of Mathematical Sciences, University of Exeter, Exeter, EX4 4QE, UK e-mail: a.d.gilbert@ex.ac.uk Dr. A. Maurel CNRS, Lab. Ondes et Acoustique, ESPCI - 10 rue Vauquelin, 75005, Paris, France e-mail: agnes.maurel@espci.fr Conference e-mail: euromechvortex@lmm.jussieu.fr EUROMECH contact person: Prof. Patrick Huerre Website
  Information:	This Euromech colloquium covers many areas of fundamental and applied research since vortices have been identifed as central patterns in many fluid flows. These coherent structures may strongly interact with external fields such as gravity, sound, magnetic fields. For instance, density gradients may be modified by the presence of vortices which are themselves altered by gravity waves. As a result, the topic is investigated by many different scientific communities, such as applied mathematics (singularity problems), fundamental hydrodynamics (turbulence, shear flow or boundary layer instabilities), acoustics (sound propagation and scattering by vortices), plasma physics (dynamo effect), mechanical engineering or aeronautics (flow control, trailing edge vortex), geophysics or meteorology (interaction of density gradients and vortices), environmental sciences (polar vortex, tornadoes dynamics, transport of Plankton by coherent vortices in the ocean). This topic possesses quite a few potential industrial applications, for instance : drag reduction in transport (plane, car, ...), enhanced mixing procedure, noise reduction, ultrasonic devices for flow measurement, meteorological models, ...The study of vortex and field interactions is a plurisciplinary subject. Classical vortex dynamics has made some remarkable progresses since the identification of vortices in laminar or turbulents flows. The growing availability during the past 10 years of fast computers, sophisticated measurements or control techniques, allows for the development of a growing number of new fluid flow applications as well as the possibility to address new fundamental problems. Indeed it is now possible to face more intricated situations containing fluid flows and fields e.g. the dynamo effect. In that perspective, it seems important to gather the various communities which are concerned by such a topic. This Colloquium will bring together worldwide specialists in order to present various aspects of the vortex dynamics and field interactions.

• [450] Studies on Splashes, a Century after A.M. Worthington

  Date:	27 October 2004 - 29 October 2004
  Location:	Carry le Rouet, France
  Contact:	Chairpersons: Professor Christophe Clanet IRPHE, Technopole de Château Gombert, 49 rue Frédéric Joliot-Curie, 13 384 Marseille, France e-mail: clanet@irphe.univ-mrs.fr Prof. David Quéré Physique de la Matiere Condensée, College de France 11 place Marcelin Berthelot, 75 231 Paris, France Prof. Jean-Marc Chomaz LADHYX, Ecole Polytechnique, Laboratoire d'hydrodynamique, 91 128 Palaiseau, France EUROMECH contact person: Prof. Patrick Huerre Website
  Information:	A splash is the impact of a liquid drop on either a solid or liquid surface. They occur in very different domains over a wide range of scales, from meteorite impacts to micro-drop jet printers. These phenomena are characterised by a short time-scale which makes their experimental study difficult. Despite the extensive literature on the subject, important questions remain open, such as the role of the surrounding fluid during the impact or the importance of the details of contact between a liquid and a solid. Drop rebounds have been observed, but the physics of the transition from the classic no-rebound situation is not understood. The importance of surface tension in small drop impact also opens the question of surfactant diffusion and its role. Extension to more complex fluids such as emulsions, or to more complex solids with rough surfaces or fibres may also be considered for their importance in applications. Finally, even if the impact of a sphere is of prime interest, study of the influence of the geometry of observed features – such as the impact of a jet, liquid curtains or colliding drops – would also have its own fascination. This colloquium, on a scientifically open field, will give an opportunity for several European groups to exchange and interact. It offers an occasion to summarise the major improvements in the understanding of splashes which have been made in the century since the landmark study of A.M. Worthington.

• [452] Advances in Simulation Techniques for Applied Dynamics

  Date:	1 March 2004 - 4 March 2004
  Location:	Halle, Germany
  Contact:	Chairpersons: Professor M. Arnold Martin-Luther-University Halle-Wittenberg, Department of Mathematics and Computer Science Institute of Numerical Mathematics Theodor-Lieser-Str. 5 D-06120 Halle (Saale), Germany e-mail: arnold@mathematik.uni-halle.de Prof. Dr.-Ing. Dr. h.c. W. Schiehlen Institute B of Mechanics, University of Stuttgart, Germany EUROMECH contact person: Prof. W. Schiehlen Website
  Information:	In engineering, advanced mechatronical systems consist of mechanical, electrical and/or hydraulical components as well as control devices with computer hardware and software. The design of such systems requires novel modelling and simulation techniques to analyse the dynamical behaviour of coupled physical phenomena. On the one hand, a heterogeneous engineering system may be described in a unified modelling framework to cover multibody dynamics, structural mechanics, hydraulics and electronics. Modelling languages like MODELICA are typical representatives of this approach. On the other hand, the individual system components may be modelled separately by standard methods and the coupling conditions are added within a co-simulation framework. Both, the unified modelling approach and the co-simulation technique are used successfully in industrial applications. There is a strong need to meet and to discuss recent advances and actual developments of simulation techniques for applied dynamics in the stimulating environment of an EUROMECH Colloquium. The topics of interest include, in particular: * Theoretical background and modelling of coupling conditions, * Different approaches to modelling and dynamical simulation of coupled mechanical systems, * Adapted numerical solution methods, * Case studies and industrial applications and * Related theoretical and numerical subjects. It is a major goal of this colloquium to bring together people from academic institutions and from industry and to provide a basis for discussion and exchange of new concepts and ideas to scientists from all over Europe. Emphasis will also be placed on sharing algorithms and concepts with young researchers who only recently entered the stage of technical simulation in the field of applied dynamics.

• [454] Large Eddy Simulation (LES), Coherent Vortex Simulation (CVS) and Vortex methods for incompressible turbulent flows

  Date:	14 April 2004 - 16 April 2004
  Location:	CIRM, Marseille, France
  Contact:	Chairpersons: Professor Kai Schneider L3M & CMI, Universite de Provence (Aix-Marseille I) 39, rue Joliot-Curie, 13453 Marseille Cedex 13, France Fax: +33 4 91 11 35 02 Phone: + 33 4 91 11 85 29 e-mail: kschneid@cmi.univ-mrs.fr Prof. Marie Farge LMD-CNRS, Ecole Normale Superieure 75231 Paris Cedex 5, France e-mail: farge@lmd.ens.fr Prof. Joel Ferziger Department of Mechanical Engineering, Stanford University, Stanford, U.S.A e-mail: ferziger@ecoule.stanford.edu EUROMECH contact person: Prof. Patrick Huerre

• [455] Semi-active Vibration Suppression

  Date:	2 July 2004 - 4 July 2004
  Location:	Prague, the Czech Republic
  Contact:	Chairpersons: Professor Michael Valasek Department of Mechanics, Faculty of Mechanical Engineering Czech Technical University, Karlovo nám. 13, 121 35 Prague 2, the Czech Republic e-mail: valasek@fsik.cvut.cz Prof. Andre Preumont Active Structures Laboratory Department of Mechanical Engineering and Robotics Faculty of Applied Sciences Universite Libre de Bruxelles, Bruxelles, Belgium EUROMECH contact person: Prof. Miloslav Okrouhlík

• [456] Experimental and Computational Biofluid Mechanics

  Date:	1 October 2004
  Location:	RWTH Aachen, Germany
  Contact:	Chairpersons: Prof. W. Schröder Fluid Mechanics and Institute of Aerodynamics RWTH Aachen Wuellnerstr. zw. 5 u. 7 D-52062 Aachen, Germany Phone: +49-(0)241 80 95410 Fax: +49-(0)241 80 92257 e-mail: office@aia.rwth-aachen.de Prof. H. Reul Helmholz Institute for Biomedical Engineering, RWTH Aachen Universitätklinikum of the RWTH Aachen Pauwelsstr. 20 D-52074 Aachen, Germany e-mail: reul@hia.rwth-aachen.de EUROMECH contact person: Prof. Patrick Huerre

• [457] Non-linear modes of vibrating systems

  Date:	7 June 2004 - 9 June 2004
  Location:	Frejus, France
  Contact:	Chairpersons: Prof. Claude-Henri Lamarque ENTPE, DGCB-LGM 3 rue Maurice Audin 69518 Vaulx-en-Velin, Cedex, France Phone: +33-(0)4 72 04 70 75 e-mail: claude.lamarque@entpe.fr Prof. Bruno Cochelin LMA-CNRS, Marseille, France EUROMECH contact person: Prof. Franz Rammerstorfer Website
  Information:	- Definitions, methods for calculation and identification of different non linear modes in vibrating problems, - Smooth and non smooth non linear problems, - Weak and strong non linearity, - benchmarking of the methods via a simple given example: comparison of the accuracy of the methods, convergence questions, - experimental results, - infinite dimensional systems, - stability analysis, bifurcations, symmetry, - transient problems , energy transition, control, - Hamiltonian problems, - applications.

• [458] Validitation and Identification of Non-linear Constitutive Equations in Solid Mechanics

  Date:	21 September 2004 - 23 September 2004
  Location:	Moscow, Russia
  Contact:	Chairpersons: Prof. R.A. Vasin Institute of Mechanics, Lomonosov Moscow State University Michurinski Prosp. 1 117192, Moscow, Russia Phone: +7-095 939 5285 Fax: +7-095 939 5285 e-mail: vasin@imec.msu.ru Prof. Georges Cailletaud Centre de Materiaux, Ecole National Superieure des Mines de Paris UMR CNRS 7633, BP87, 91003 Evry Cedex, France Prof. B.E. Melnikov St. Petersburg State Tech. University Polytechnicheskaya Street 29 195 251 St. Petersburg, Russia Phone: +7-812 552 63 03 e-mail: strength@mtr.hop.stu.neva.ru EUROMECH contact person: Prof. Irina Goryacheva Website

• [459] Mechanical Behaviour of Cellular Solids

  Date:	7 June 2004 - 10 June 2004
  Location:	Nancy, France
  Contact:	Chairpersons: Prof. J.F. Ganghoffer LEMTA-ENSEM 2 Avenue de la Foret de Haye BP 160,54504 Vandoeuvre les Nancy, Cedex, France Phone: +33-(0)3 83 59 57 24 Fax: +33-(0)3 83 59 55 51 e-mail: jfgangho@ensem.inpl-nancy.fr Dr. P. Onck University of Groningen, the Netherlands EUROMECH contact person: Prof. Eric van der Giessen

• [464] Fibre-reinforced solids: constitutive laws and instabilities

  Date:	28 September 2004 - 1 October 2004
  Location:	La Residencia, Castro Urdiales, Cantabria, Spain
  Contact:	Chairpersons: Prof. R.W. Ogden Department of Mathematics, University of Glasgow G12 8QW, U.K. Phone: +44 (0)141 330 4550 Fax: + 44-(0)141 330 4111 e-mail: rwo@maths.gla.ac.uk Dr. J. Merodio University of Cantabria, Santander, Spain Website
  Information:	The Colloquium will focus on the development of constitutive laws for fibre-reinforced materials capable of undergoing large elastic or inelastic deformations, with particular reference to polymeric composites (glass fibre and carbon fibre composites, for example) and biological tissues (for example, arterial walls and membranous tissues), which have some features in common from the modelling point of view. Fabric and network materials will also be treated. Models with one or more families of fibres or with statistical distributions of fibres will be included, with the emphasis on anisotropic modelling. This is currently a very active and rapidly developing area of research with important technological and medical applications. Analysis of boundary-value problems for such materials, with particular attention focused on questions of stability. Treatment of instabilities of both continuous and discontinuous type: e.g. for tissues, instabilities associated with tissue thinning and growth (development of aneurysms, for example), and for polymeric composites, fibre kinking, fibre splitting, de-bonding and the development of kink bands (which requires inelastic theory). Part of the aim is to bring together experimentalists and theoreticians — engineers, materials scientists, mechanics specialists and applied mathematicians, in particular — in order to stimulate mutual interaction and to identify key experiments that need to be performed to test the theories and also to identify what contributions theoreticians can make to the understanding of experimental results.