TITLE:
Parallel Simulation of 3D Wave Propagation by Domain Decomposition
AUTHORS:
Galina Reshetova, Vladimir Tcheverda, Dmitry Vishnevsky
KEYWORDS:
Seismic Wave propagation; Sonic Log; Numerical Simulation; Domain Decomposition
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.1 No.4,
November
6,
2013
ABSTRACT: In order to
perform large scale numerical simulation of wave propagation in 3D
heterogeneous multiscale viscoelastic media, Finite Difference technique and
its parallel implementation based on domain decomposition is used. A couple of
typical statements of borehole geophysics are dealt with—sonic log and cross well measurements.
Both of them are essentially multiscales, which claims to take into account
heterogeneities of very different sizes in order to provide reliable results of
simulations. Locally refined spatial grids help us to avoid the use of
redundantly tiny grid cells in a target area, but cause some troubles with
uniform load of Processor Units involved in computations. We present
results of scalability tests together with results of numerical simulations for
both statements performed for some realistic models.