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AC2Dr: Acoustic Codes in Spherical Coordinates

AC2Dr is a 2-D numerical solver for the acoustic wave equation using the finite difference method. The acoustic wave equation is split into two first-order differential equations for pressure and particle velocity, and approximated by the sixth-order accurate central difference in space and time. The equations are solved in the axisymmetric spherical coordinates, and hence, are able to simulate 3-D spherical spreading of wavefields by 2-D. The absorbing boundary, which prevents outgoing waves from reflecting at the computational domain boundary, is realized by the super-grid method based on coordinate stretching. AC2Dr supports the message passing interface (MPI) on multicore CPU, improving simulation performance dramatically.

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REQUIREMENTS

C compilers compatible with the GNU C and environments enabling the Message Passing Interface (MPI)

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INSTALLATION

make all

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DOCUMENTATION

See the user guide included in the the doc folder

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LICENSE

AC2Dr is distributed under the terms of the MIT license. All new contributions must be made under this license.

SPDX-License-Identifier: MIT

LLNL-CODE-854516