ROLAND
MARTIN
CNRS Research Scientist/HDR in
Geophysics
Department of Modeling and Imaging
in Geosciences, University of Pau, France
RSS
feed
"Still open position in 2010 : Post-doc in parallel
computing for applications in Geophysics at INRIA Magique3D Team"
Project
AHPI of ANR (French NSF)
My research interests include the numerical study of wave
propagation in geological structures, multiphase flow imaging, . I
use a variational formulation of the equations of elastodynamics, and
solve it using the so-called spectral-element method, a
high-order version of the finite-element method, which can be shown
to be very accurate at low cost, and particularly well suited to an
efficient implementation on parallel computers. This work is done in
collaboration with Prof. Dimitri Komatitsch (University of PAU). We
apply such numerical techniques to the study of wave propagation in
complex media for oil industry purposes. An effort is done also in
the implementaion of optimized boundary conditions (PML) for elastic
wave propagation, electromagnetics, shallow water and Navier Stokes
equations.
I also collaborate with Dimitri Komatitsch from University of
Pau/CNRS/INRIA (France) and Steven D. Gedney (University of Kentucky,
USA) on optimized and stabilized unsplit Perfectly Matched Layers,
called unsplit Convolutional PML (C-PML) absorbing layers, for the
seismic wave equation. We implemented these conditions both in
differential form using a finite-difference technique in the time
domain (FDTD) and in variational form using a spectral-element
technique. For more details about PML and C-PML, see for instance
Wikipedia
about PML as well as our publications.
For more details about finite differences in the time domain (FDTD),
see for instance Wikipedia
about FDTD. All our C-PML source codes (SEISMIC_CPML package) are
available
open source. Related papers can also be downloaded from SEISMIC
CPML papers
I am working with Alejandro Rodriguez Castellanos (Instituto
Mexicano del Petroleo/IMP-Mexico) and Francisco Sanchez Sesma
(Universidad Nacional Autonoma de
Mexico/UNAM-Mexico) on wave propagation in fractured media
using Indirect Boundary Element methods. I am collaborating in
Reconstruction and Imaging algorithms with Carlos Ortiz-Alemàn
and Carlos Gamio Roffé of IMP using iterative (Projected
Landweber) or stochastic (Simulated annealing, genetic algorithms)
for multiphase flow measurement in fluidized beds or oil-gas-solids
mixtures.
Recently I started a collaboration with Prof. Roberto Zenit of
the Complex Materials Department of UNAM for the numerical simulation
of vortex impacts on plates and the study of heat transfers.
Main interests:
- Numerical Wave propagation using Spectral element
methods, Finite Difference and Integral Boundary Element methods
- Perfectly Matched Layers (PML) for elastic wave
equations, shallow water equations, Navier Stokes equations.
- Capacitance Tomography using simulated annealing and
genetic algorithms.
- Fluid Mechanics: Study of heat transfer due to
Impacts of jets on plates.
With some colleagues, we have started an INRIA project
called MAGIQUE-3D.
I also work with Carlos-Ortiz Aleman and Carlos Gamio
Roffé from Instituto Mexicano del Petroleo, Mexico City,
France, on reconstruction algorithms for multiphase flow measurement.
Iterative processes like Gauss-Newton methods or stochastic
techniques like Simulated annealing and Genetic algorithms provide
successful dynamic 2D and 3D reconstructions. Further improvements
are being performed in order to reduce computational costs in running
time and memory storage.
The SEISMIC_CPML package has been
downloaded by many institutions and research groups worlwide since
May 2008.
Roland MARTIN
Laboratoire
de Modélisation et d'Imagerie en Géosciences FRE
2639
Université de Pau et des Pays de l'Adour
Bâtiment
IPRA - Avenue de l'Université
BP 1155
64013 Pau
Cedex
FRANCE
email:
roland.martin@univ-pau.fr
(preferred)
Secretary (Mme Joëlle Arriulou or Mr Bruno
Demoisy): (+ 33) 5 5940 7432 (please use
email instead if possible)
e-fax: (+ 1)
309 403 4447 - from
the USA, (309) 403 4447 -
or (+ 33) 5 5940 7415
For
visitors, here is how
to reach our building.
Roland Martin, Department
of Modeling and Imaging in Geosciences, University
of Pau, France, Last update:February 2010, © 2010, all
rights reserved
My
name is Roland Martin (IR/HDR), I am a Senior Research Scientist-HDR
(Habilitation a diriger des recherches) in the Department
of Modeling and Imaging in Geosciences at University
of Pau, France.
List of publications
Curriculum Vitae
SEISMIC CPML software package
INRIA Equipe-Projet MAGIQUE-3D