OpenFOAM is a free-to-use Open Source numerical simulation software with extensive CFD and multi-physics capabilities
OpenFOAM stands for Open Field Operation and Manipulation
OpenFOAM is first and foremost a C++ library used to solve partial differential equations (PDEs), and ordinary differential equations (ODEs)
It comes with several ready-to-use or out-of-box solvers, pre-processing utilities and post-processing utilities and supports parallel computing.
It is licensed under the GNU General Public License (GPL). That means it is freely available and distributed with the source code
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