An OpenFOAM solver for Boltzmann model equation using discrete unified gas kinetic scheme [1,2,3].

• Solving discrete velocity Boltzmann equation;
• Based on Shakhov-BGK collision model;
• Using discrete unified gas kinetic scheme (Asymptotic preserving property);
• A standard OpenFOAM solver;
• Arbitrary unstructured meshes;
• MPI parallel computing capability;
• 1D & 2D & 3D in a single solver;
• Post processing tools of OpenFOAM are ready to use;
• Various boundary condition types.

of240 # change the version code according your OF installation
cd dugksFoam/src

# make own copy of wmake so we can override the 'CC' defination to mpicxx to support the velocity space decomposition MPI parallel computing ability.
# note: this workround may only works at OpenFOAM-2.4.0

cp `which wmake` .
sed -i '316s/makeType/makeType CC=mpicxx/' wmake
./Allwmake

• OpenFOAM-2.4.0 with intel compilers
• OpenFOAM-2.4.0 with gnu compilers

See more details in dugksFoam.pdf in the doc directory, or download it here.

• [1] Z.L. Guo, K. Xu, R.J. Wang, Discrete unified gas kinetic scheme for all Knudsen number flows: low-speed isothermal case, Phys. Rev. E, 88 (2013) 033305.
• [2] Z.L. Guo, R.J. Wang, K. Xu, Discrete unified gas kinetic scheme for all Knudsen number flows. II. Thermal compressible case, Phys. Rev. E, 91(2015) 033313.
• [3] L.H. Zhu, Z.L. Guo, K. Xu, Discrete unified gas kinetic scheme on unstructured meshes, Comp. Fluids, 127(2016) 211-225
• [4] L.H. Zhu, S.Z. Chen, Z.L. Guo, dugksFoam: An open source OpenFOAM solver for the Boltzmann model equation, Comp. Phys. Commun., 213(2017) 155-164