A software to solve the Stokes equation with fast-multipole boundary element method.
- Generates input files for a third-party hydrodynamic solver (FMM-BEM [1]).
- Computes velocities from a given surface force distribution.
Can solve the inverse and mixed problems (where not all forces are known).
- Computing forces from velocities is an inverse problem, where a linear system is solved with GMRES.
- In this code is adapted for the inverse problem.
- FBEM = fast Boundary Element Method
- Download FBEM executables.
- Go to http://www.yijunliu.com/
- Get thee C2 package: 3D Stokes Flow.
- Unpack. Read license and help files.
- Place FBEM executables to
FBEM/exe/folder:- Windows executable
3D_Stokes_Flow_FMM_64.exe - Linux executable
3D_Stokes_Flow_FMM_linux.exe(we requested the file directly from the author, as it had not been available on the website)
- Windows executable
- For Linux: give execution permission.
See example folder.
For simplicity, the fluid viscosity is set to 1. For different visosity, one can rescale input velocities.
[1] https://www.yijunliu.com/ Package C2