Fluid velocity (left) and mesh deformation (right) of an idealized left ventricle.
OasisMove is a high-level/high-performance open-source Navier-Stokes solver for fluid flow in rigid and moving domains written in Python/FEniCS, and is an extension of the computational fluid dynamics (CFD) solver Oasis. In OasisMove the Navier-Stokes equations are expressed in the arbitrary Lagrangian-Eulerian formulation, which is suitable for handling moving domains. This moving domain solver has undergone rigorous verification and validation, and results have shown that OasisMove follows theoretical convergence rates, begin second order accurate in time, and second and third order accurate in space with P1/P1 and P2/P1 finite elements. Although OasisMove was developed with cardiovascular flows in mind, it is applicable to several flow problems within CFD.
Spatial convergence study of OasisMove performed by varying the characteristic edge length Δx. On the left, the L2 error for the velocity, and on the right the L2 error for the pressure, both following theoretical convergence rates. The solid lines represent the simulation results, and the dashed lines display the theoretical convergence rates. A similar study was performed to address temporal convergence, resulting in second order convergence (not shown here).
OasisMove is developed by
- Henrik Aasen Kjeldsberg
OasisMove is licensed under the GNU GPL, version 3 or (at your option) any later version.
OasisMove is Copyright (2022) by the author.
For detailed installation notes and an introduction to OasisMove, please refer to the documentation. For (outdated) details on vanilla Oasis, please refer to its wiki or the user manual
If you wish to use OasisMove/Oasis for journal publications, please cite the following paper.
OasisMove requires a compatible installation of FEniCS, which is available through Anaconda on macOS and Linux. Windows
users may need to install FEniCS as described here. Start by installing
Anaconda/Miniconda on your computer, and add the conda-forge channel with:
conda config --add channels conda-forge
conda config --set channel_priority strict
Then create a conda environment for FEniCS by executing the following command in a terminal
conda create -n your_environment fenics
An alternative is to run FEniCS through a Docker image. Next, you need to install OasisMove. You can do so with the following commands:
git clone https://github.com/KVSlab/OasisMove
pip install --editable OasisMove
Now you are all set, and can start running CFD simulations in moving domains with OasisMove.
Please report bugs and other issues through the issue tracker.