Section: Software and Platforms
Hou10ni
Participant : Julien Diaz [correspondant] .
Hou10ni-Time-Domain
This software, written in FORTRAN 90, simulates
the propagation of acoustic waves in
heterogeneous 2D and 3D media. It is based on an
Interior Penalty Discontinuous Galerkin Method
(IPDGM). The 2D version of the code has been
implemented in the Reverse Time Migration (RTM)
software of Total in the framework of the Ph.D
thesis of Caroline Baldassari. The 2D code allows
for the use of meshes composed of cells of
various order (
The main competitors of Hou10ni are codes based
on Finite Differences, Spectral Element Method
or other Discontinuous Galerkin Methods (such as
the ADER schemes). During her Ph.D thesis,
Caroline Baldassari compared the solution
obtained by Hou10ni to the solution obtained by
a Finite Difference Method and by a Spectral
Element Method (SPECFEM). To evaluate the
accuracy of the solutions, we have compared them
to analytical solutions provided by the codes
Gar6more (see below). The results of these
comparisons are: a) that Hou10ni outperforms the
Finite Difference Methods both in terms of
accuracy and of computational burden and b) that
its performances are similar to Spectral Element
Methods. Since Hou10ni allows for the use of
meshes based on tetrahedrons, which are more
appropriate to mesh complex topographies, and
for the
Hou10ni-Frequency-Domain
Recently, we have extended the 2D version of Hou10ni for computing the solution of the harmonic wave equation (Helmholtz), in the framework of the PhD thesis of Élodie Estécahandy. This new version is able to deal with both acoustic and elastodynamic media, but also to model elastoacoustic problems. The surfaces between the different media can be approximated by curved elements. We can use up to
The 3D version of Hou10ni-Frequency-Domain is under development. The code is now able to solve acoustic problems up to