Abstract
A fast and effective forward modeling algorithm for the acoustic wave equation is very important to the seismic. Many researches show that the weighted nearly-analytical discrete (WNAD) method is a new numerical technology which can effectively suppress the numerical dispersion when the coarse spatial grid is used. Recently, the multi-core CPU is very popular in the PC-market. It’s a hot point to increase the computational efficiency by using the multi-core hardware, but the present computational programs almost all are single thread programs which make them cannot use the multi-core effectively. OpenMP is approved by many hardware industries and becomes one of the most popular parallel tools on the shared-memory platforms. In this paper, we combine the OpenMP and WNAD method to simulate the acoustic wave field. The numerical results show that OpenMP +WNAD method can suppress effectively the numerical dispersion, simulate accurately the wave field of acoustic and reduce effectively the simulation time to the 1/3 of that of the traditional program. OpenMP+WNAD method has a profound meaning to improve the seismic exploration.
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© 2012 Springer-Verlag Berlin Heidelberg
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Chen, Yl., Xie, Xj., Song, Gj. (2012). Parallel WNAD Method and Its Wave Field Simulations. In: Cao, BY., Xie, XJ. (eds) Fuzzy Engineering and Operations Research. Advances in Intelligent and Soft Computing, vol 147. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-28592-9_42
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DOI: https://doi.org/10.1007/978-3-642-28592-9_42
Publisher Name: Springer, Berlin, Heidelberg
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