Project Name: Solid Wave Sim (swSim) Version 1.0 Authors: Erik Frankforter, Elizabeth Gregory, Bill Schneck Description: Solid Wave Simulation (swSim) is software that solves heterogeneous, anisotropic elastodynamic equations for ultrasonic NDE simulation. A time-explicit staggered grid finite difference (FD) scheme is employed and solved on graphics processing units (GPUs). Parallelism via the Message Passing Interface (MPI) allows for deployment on a cluster, or on a single computer with one or more GPUs. Wavefield data is output using Visualization Toolkit (VTK) file formats for 3D rendering capabilities via open source tools, and a kernel composition module allows high-level registration of sequences of matrix operations, providing extensibility in equations and physics solved.
Copyright 2020 United States Government as represented by the Administrator of the National Aeronautics and Space Administration. No copyright is claimed in the United States under Title 17, U.S. Code. All Other Rights Reserved. See Appendix A for 3rd party licenses.
The Solid-Wave Sim (swSIM) platform is licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0.
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Available at https://nasa.github.io/swSim/
- Download latest release
- Ensure correct dependencies are installed, and are in the search path
- MPI
- VTK >= 9.0 (built and linked with the same MPI being used for PanNDE)
- gcc >= 7.3
- cmake >= 3.13.5
- libxml2 >-2.9.10
- cuda >= 10.1
- Ensure Python3 is installed for some included post processing utilities
- this is optional, if the utilities are not desired
- cd to
swSimroot/directory - generate compilation instructions using
cmake -B build -S . - compile with
make -C buildCreate build files using CMAKE 3.13 or higher
The testing directory contains four test cases:
- 30x30ElongatedQausiIsoCFRPTestPlate <- necessary for Code Testing
- 120x60CrossPlyCFRPTestPlate
- 120x60CrossPlyCFRPTestPlate_course
- 180x180ElongatedQausiIsoCFRPTestPlate
Each of these subdirectories contain a .py file that can be ran to generate the required input files. We recommend creating scripts to generate the input files.
mpiexec -np <number_of_processes> ./bin/rsg_sim Path/to/Inputs.xml
- Envelope size in voxels (x, y, & z).
- Size of voxels in meters (x, y, & z).
- Root name of the geometry file (example: 'Geometry' for Geometry.raw and Geometry_planCounts.raw)
- Name of the rotations file (example: 'rotations.bin')
- Total number of materials
- Materials with number corresponding to the values in the geometry file:
- density
- 21 elements or the stiffness Matrix
- Total number of time steps to be simulated.
- Size of the time step in seconds
- Total number of excitations
- Excitations with unique ID number:
- radius of the excitation
- location of the excitation in meters
- initial time step the excitation is active
- the duration of the excitation in time steps
- the orientation of the excitation (x, y, & z)
- a scaling vector of the excitation (x, y, & z)