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- W1489724930 abstract "On the base of the application of a finite-difference approximation of an initial boundary value problem for elastic wave equations (velocity/stress formulation), numerical method and its algorithmic implementation have been developed in order to perform a computer simulation of sonic logging. The very general statement is dealt with surrounding medium allowed to be 3D heterogeneous Vertical Transversely Isotropic (VTI) with attenuation and arbitrary source position at any point inside or outside the well. To provide the most precise description of the sharpest interface of the problem the interface of the well, the problem is studied in cylindrical coordinates with axis directed along the well. In order to truncate area of computations two approaches are used: classical version of Perfectly Matched Layer (PML) and extension on the base of optimal grid. Implementation of parallel computations is done via Domain Decomposition. Data exchange between Processor Units is performed with the help of Message Passing Interface (MPI) library. Results of numerical experiments for VTI media are presented and discussed." @default.
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- W1489724930 date "2009-01-01" @default.
- W1489724930 modified "2023-09-22" @default.
- W1489724930 title "Конечно-разностное моделирование акустического каротажа в трехмерных неоднородных трансверсально-изотропных средах с поглощением" @default.
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