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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.

REQUIREMENTS

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

INSTALLATION

make all

DOCUMENTATION

See the user guide included in the the doc folder

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