Title :
Large scale calculations of 3D elastic wave propagation in a complex geology
Author :
Pereyra, V. ; Richardson, E. ; Zarantonello, S.E.
Author_Institution :
Weidlinger Associates, Los Altos, CA, USA
Abstract :
The authors present a large-scale finite element simulation of fully elastic seismic waves propagating in a complex 3-D geological environment. The results are noteworthy on three accounts: (1) the complexity of the synthetic model which involves a folded structure and variable velocity of propagation; (2) the size and detail of the computational mesh, with over 13 million elements and 1700 time steps; and (3) a high computational efficiency and speed of execution. A finite-element explicit-in-time procedure was used to solve the 3-D elastic wave equations. The wave train was generated by a 3-Hz surface pressure source over a simulated time interval of 10 s. The simulation itself took 4.5 h to complete on a Fujitsu VP2400 supercomputer, at a sustained rate of about 0.5 GFLOPS
Keywords :
computational complexity; finite element analysis; geophysics computing; parallel processing; seismic waves; 0.5 GFLOPS; 3-Hz surface pressure source; 3D elastic wave propagation; Fujitsu VP2400 supercomputer; complex geology; complexity; computational mesh; finite-element explicit-in-time procedure; folded structure; fully elastic seismic waves; large scale calculations; large-scale finite element simulation; synthetic model; Computational modeling; Earth; Finite element methods; Geology; Large-scale systems; Packaging; Partial differential equations; Ray tracing; Solid modeling; Supercomputers;
Conference_Titel :
Supercomputing '92., Proceedings
Conference_Location :
Minneapolis, MN
Print_ISBN :
0-8186-2630-5
DOI :
10.1109/SUPERC.1992.236672
