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VERSION:2.0
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SUMMARY:Joint Seminar: Civil Engineering and Open Science series
DTSTART:20230203T120000
DTSTAMP:20261005T074130Z
UID:7d13e619e18e917c526a8e1c0eedc36301ca0559dad22ded574fabcd
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Jean-François Remacle\nThe Civil Engineering Institute\
 , in collaboration with ENAC Open Science and the Open Science office\, ar
 e happy to present:\n\nThe X-MESH method for capturing interfaces\nby Prof
 . Jean-François Remacle\, from UCLouvain  \n \nIn this presentation\, w
 e develop an innovative approach - X-MESH - to overcome a major difficulty
  associated with numerical simulation in engineering: we aim to provide a 
 revolutionary way to track physical interfaces in finite element simulatio
 ns. The idea is to use so-called extreme mesh deformations. This new appro
 ach should allow low computational cost simulations as well as high robust
 ness and accuracy. X-MESH is designed to avoid the pitfalls of current ALE
  methods by allowing topological changes on fixed mesh.\nThe key idea of X
 -MESH is to allow elements to deform until they reach a zero measure. For 
 example\, a triangle can deform into an edge or even a point. This idea is
  rather extreme and completely revisits the interaction between the meshin
 g community and the computational community\, which for decades have been 
 trying to interact through beautiful meshes.\nIn this talk\, we will focus
  on both the mathematical issues related to the use of zero-measure elemen
 ts and the X-MESH resolution scheme.Several applications will be targeted:
  the Stefan model of phase change\, two-phase flows and contact between de
 formable solids.\n\nThe seminar will be followed by an open discussion on 
 the benefits and obstacles of developing open science projects\, and how t
 o rethink the future of research in a more collaborative way. Food will be
  provided following the seminar\, to encourage networking and get to know 
 the speaker!\n\nAbout the speaker\n \nAfter his Engineering Degree at the
  University of Liege in Belgium in 1992\, Jean-François Remacle obtained
  in 1997 a Ph.D. from the same University. He then spent two years at the 
 Ecole Polytechnique de Montréal as a post-doctoral fellow of Prof. F. Tr
 ochu\, followed by three years at Rensselaer Polytechnic Institute in the 
 research team of Prof. M. Shephard (one year as research associate followe
 d by two years as research assistant professor). It was during his stay at
  Rensselaer that Pr. Remacle started to work closely with Mark Shephard on
  mesh generation. Pr. Shephard’s seminal work on mesh generation is one 
 of the most important contributions ever. It was also during that stay tha
 t Pr. Remacle started the development of Gmsh\, the open source mesh gener
 ator. After these five years in Northern America\, Jean-François Remacle
  joined the Université catholique de Louvain in 2002 as an assistant Pro
 fessor. He then became Associate Professor in 2005 and Full Professor in 2
 012. In the following years of his return to Europe\, Pr. Remacle dedicate
 d a large part of his research to mesh generation.\n \nSince 2002\, Pr. R
 emacle and his colleague Pr. C. Geuzaine from the University of Liège ha
 ve continued the development of Gmsh (www.gmsh.info). Gmsh was initially r
 eleased as an open source in 2003 under the GNU General Public Licence (GP
 L). In 2009\, a paper was published in the International Journal for Numer
 ical Methods in Engineering (IJNME) that describes original features of Gm
 sh [GR09]. This paper is the most cited paper of IJNME in the last 3 years
  (https://onlinelibrary.wiley.com/journal/10970207). Gmsh was awarded a fr
 ee software prize at the “trophées du libre” in 2009 . The size of G
 msh’s user community is now of over 8\,000 regular users\, including eng
 ineers of major European industries like Siemens\, Dassault\, EDF\, Airbus
  or Snecma. Three Gmsh workshops have been organized\, the last one in 201
 7.\n \nIn 2015\, Pr. Remacle received an ERC Advanced Grant (www.hextreme
 .eu) with two major subjects: fast mesh generation and hexahedral mesh gen
 eration. Several breakthroughs have been achieved in HEXTREME\, the three 
 most significative ones being the developement of the fastest tetrahedral 
 mesh generator\, the use of Ginzburg Landau theory for generating quad mes
 hes\, and the development of an algorithm to build combinatorial hexahedra
 l meshes whose boundary facets exactly match a given quadrangulation of th
 e topological sphere.\n \nIn 2022\,  Pr. Remacle received an ERC SYNERGY
  Grant together with Pr. Moës (Ecole Centrale de Nantes).\n \nSince 2016
 \, the papers co-authored by Jean-François Remacle received over 6600 ci
 tations (Source: Google Scholar). It is interesting to note that these cit
 ations are not only related to mesh generation but to a wide a spectrum of
  computational fields: computational fluid dynamics\, ocean modeling\, com
 putational material science\, fracture mechanics\, biomechanics\, scientif
 ic visualization\, high performance computing.\n \nIn parallel to the fun
 damental developments of the mesh generation\, Pr. Remacle has been active
 ly involved in collaborative projects. The fruitful interactions that he h
 ad with engineers of major European consortia (Airbus\, Siemens\, Dassault
 ) have convinced him of the great interest of the European industry for ne
 w  developments in mesh generation for computational mechanics.\n \n 
LOCATION:BM 5202 https://plan.epfl.ch/?room==BM%205202 https://epfl.zoom.u
 s/j/67450315388
STATUS:CONFIRMED
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