## Cemracs concept

Cemracs '11 takes place at the CIRM (Marseille, France) from July 18th to August 26th, 2011.

The CEMRACS is a scientific event of the SMAI (the french Society of Applied and Industrial Mathematics). The Cemracs concept was initiated in 1996 by Yvon Maday and Frédéric Coquel. Cemracs '11 will be the sixteenth of the series, devoted this year to **Multiscale Complex Modelling** aspects in scientific computing. The goal of this event is to bring together scientists from both the academic and industrial communities and discuss these topics. Cemracs '11 consists in **four** types of events:

- a one week
**Summer school**(July 18th - 22nd), - a five week
**Research session**(July 25th - August 26th), - a one week
**A SimTech workshop**(August 22nd - 24th), - a five week
**Math-Industry brainstorming session**(July 25th - August 26th).

During the first week, a classical summer school is proposed. It consists in several lectures given by leading scientists and related to the topics of the research projects. The remaining 5 weeks are dedicated to working on the research projects, after a daily morning seminar.

Each participant will work in a team on a project proposed by an industrial or an academic partner. Each team will be composed of young researchers assisted by one or more senior researchers. The commitment for the young researchers is to be present for the whole period of the research session. The commitment for the senior researchers is to ensure the management of the project, that is mainly to precise definition of the subject and supervision of the project. Other visiting scientists, interested in the ongoing research, can be associated to the program for shorter periods and are, of course, welcome.

## Summer School Speakers

Emmanuel Frénod (Univ. Bretagne Sud): Two-scale convergence |

Edwige Godlewski (Univ. Pierre et Marie Curie-Paris 6): Coupling algorithms for hyperbolic systems |

Francesca Gulminelli (Univ. Caen): Phase transition and critical phenomena |

Siegfried Müller (Univ. Aachen): Multiscale based grid adaptation for finite volume schemes |

Mario Ohlberger (Univ. Münster): A posteriori estimates and adaptation |

Gabriel Turinici (Univ. Paris Dauphine): A numerical approach to the Mean Field Games |

## Scientific Topic of Cemracs '11 Research projects

This Cemracs is devoted to the mathematical and numerical multiscale modelling.

Lectures will detail various issues: multiscale modelling, multiscale analysis, algorithms, applications.

The projects will give the opportunity to develop new mathematical models and algorithms for solving complex problems arising in applications.

## Simtech workshop

Stuttgart Research Centre for Simulation Technology "Simulation Technology" (SimTech) supports a one week workshop about Multiscale models of Multiphase flows. The program is available here (see also http://www.simtech.uni-stuttgart.de/veranstaltungen/wscemracs/).

## Math-Industry brainstorming session

The CNRS supports a five-week session of mathematics for industry meetings, in the spirit of Study Groups (see http://www.maths-in-industry.org/) which are an internationally recognised method of technology transfer between academic mathematicians and industry. It provides a forum for industrial scientists to work alongside academic mathematicians on problems of direct industrial relevance. In order to animate this event, the CNRS has given an impulse through its program "Projets Exploratoires Premier Soutien" (PEPS, "Pathfinder project, first support") http://www.cnrs.fr/inshs/recherche/peps/PEPS.htm The first conclusions of these projects will be presented at CEMRACS by the involved students. CEMRACS will also be an occasion to invite experts in order to advance the PEPS projects.

## Organizers

Organizing Committee: F. Coquel (CMAPX Palaiseau), M. Gutnic (IRMA Strasbourg), P. Helluy (IRMA Strasbourg), F. Lagoutière (LM Orsay and INRIA Lille), C. Rohde (IAANS Stuttgart), N. Seguin (LJLL Paris)

Scientific Committee: P. Le Tallec (École Polytechnique), P.-L. Lions (Collège de France), Y. Maday (Université Pierre et Marie Curie, Paris 6), É. Pardoux (Université de Provence, Aix-Marseille 1), O. Pironneau (Université Pierre et Marie Curie, Paris 6 & Académie des Sciences), P.-A. Raviart (Université Pierre et Marie Curie, Paris 6), D. Talay (INRIA Sophia-Antipolis Méditerranée & SMAI).

## History of CEMRACS

- CEMRACS 1996 (Y. Maday, F. Coquel)

Coupled problems - CEMRACS 1997 (Y. Maday, F. Coquel)

Shape optimization - CEMRACS 1998 (Y. Maday, F. Coquel)

Error estimates and adaptativity, wavelets for the scientific computing, domain decomposition methods and parallel computing, oriented objects languages for the scientific computing - CEMRACS 1999 (F. Coquel, S. Cordier)

Numerical approximation of complex flows, from the kinetic description to the hydrodynamic limit - CEMRACS 2000 (R. Abgrall)

Environmental problems: combustion, stocking nuclear waste - CEMRACS 2001 (Y. Achdou, C. Le Bris, F. Nataf)

Modelling and numerical simulation of multiscale problems - CEMRACS 2002 (A. Cohen, P.L. Combettes)

Mathematical methods in image processing - CEMRACS 2003 (S. Cordier, T. Goudon, M. Gutnic, E. Sonnendrücker)

Numerical methods for hyperbolic and kinetic problems - CEMRACS 2004 (E. Cancès, J.-F. Gerbeau)

Mathematics and applications in biology and medicine - CEMRACS 2005 (C.-D. Munz, E. Sonnendrücker, C. Brun, D. Juvé, M. Manhart)

Computational aeroacoustics and CFD in turbulent flows - CEMRACS 2006 (G. Bal, J. Garnier, D. Lucor)

Random modeling and uncertainty management - CEMRACS 2007 (P. Frey, C. Dobrzynski, P. Pébay)

Pre and post processing in scientific computing - CEMRACS 2008 (B. Maury, C. Misbah, J.-B. Apoung-Kamga, L. Boudin, M. Ismaïl, S. Martin , T. Takahashi)

Modelling and Numerical Simulation of Complex Fluids - CEMRACS 2009 (V. Calvez, M.-A.Dronne, T. Dumont, V. Louvet, P. Vigneaux).

Mathematical modelling of medecine. - CEMRACS 2010 (N. Crouseille, H. Guillard, B. NKonga, E. Sonnendrucker).

Numerical Modelling of fusion.

(c) SMAI - CEMRACS 2011