Hermes-3 is a multifluid plasma simulation model for transport and turbulence in the edge of magnetically confined plasmas, such as tokamaks. It is built on the BOUT++ framework, and uses a system of reusable components to build models at runtime based on input configuration, in 1D, 2D or 3D curvlinear coordinates. The manual is here on Readthedocs.
Post-processing Hermes-3 is made easy by using the xHermes Python library. xHermes is built on top of xBOUT and Xarray and automatically accounts for the normalisation of Hermes-3 parameters, as well as providing access to many useful xBOUT post-processing functions. Many of these are showcased in the xBOUT examples.
Note Under development, research code, may change without notice.
Hermes-3 is released under the GPL-3 license. See LICENSE and NOTICE for details. If you are using Hermes-3, please cite the relevant papers.
All new contributions must be made under the GPLv3 license.
LLNL-CODE-845139
Copyright Hermes-3 contributors 2017-2023
email: [email protected]
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Only CMake is supported for building Hermes-3 and running the tests. During configuration BOUT++ will be automatically downloaded as a submodule, together with some dependencies. NetCDF and FFTW are assumed to be installed already; optional dependencies include SUNDIALS and PETSc. The recommended way to build Hermes-3 links to the SUNDIALS library.
-
Configure with cmake, downloading and linking to SUNDIALS:
$ cmake . -B build -DBOUT_DOWNLOAD_SUNDIALS=ON
-
Build, compiling Hermes-3 and all dependencies:
$ cmake --build build
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Run the unit and integrated tests to check that everything is working:
$ cd build $ ctest
Note that the integrated tests require MPI, and so may not run on the head nodes of many computing clusters.
The CMake configuration can be customised: See the BOUT++
documentation
for examples of using cmake arguments, or edit the compile options
interactively before building:
$ ccmake . -B build
If you have already installed BOUT++ and want to use that rather than
configure and build BOUT++ again, set HERMES_BUILD_BOUT to OFF and pass
CMake the path to the BOUT++ build directory e.g.
$ cmake . -B build -DHERMES_BUILD_BOUT=OFF -DCMAKE_PREFIX_PATH=$HOME/BOUT-dev/build
Note that Hermes-3 currently requires a specific version of BOUT++: https://github.com/boutproject/BOUT-dev/commit/7152948fbde505f6708d5ca4a9c21e5828d1e0a1
There are example inputs under the examples/ subdirectory. A simple example is a 2D (drift plane) simulation of a plasma blob/filament, similar to the BOUT++ blob2d example:
./hermes-3 -d examples/blob2d
See the examples for more complicated cases.
- B.Dudson, M.Kryjak, H.Muhammed, P.Hill, J,Omotani Hermes-3: Multi-component plasma simulations with BOUT++ Comp. Phys. Comm. 2023 108991. doi:10.1016/j.cpc.2023.108991. Preprint: arXiv.2303.12131.