dugksFoam

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

Key features

• 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.

Installation and documentation

NOTE: Tested on the following OpenFOAM versions :

• 2.4.0, gcc/intel
• 3.0.0, gcc
• 3.0.1, gcc
• 4.0, gcc
• 4.1 gcc/intel
• 6.0, gcc

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

See documentation at doc/dugksFoam.pdf.

References

• [1] Z. Guo, K. Xu, R. Wang, Discrete unified gas kinetic scheme for all Knudsen number flows: low-speed isothermal case, Phys. Rev. E, 88 (2013) 033305.
• [2] Z. Guo, R. 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. Zhu, Z. Guo, K. Xu, Discrete unified gas kinetic scheme on unstructured meshes, Comp. Fluids, 127(2016) 211-225
• [4] L. Zhu, S. Chen, Z. Guo, dugksFoam: An open source OpenFOAM solver for the Boltzmann model equation, Comp. Phys. Commun., 213(2017) 155-164
• [5] L. Zhu, Z. Guo, Numerical study of nonequilibrium gas flow in a microchannel with a ratchet surface, Phys. Rev. E. 95, (2017), 023113
• [6] A. Lotfian, E. Roohi, Radiometric flow in periodically patterned channels: fluid physics and improved configurations, Journal of Fluid Mechanics(2019), 860, 544-576
• [7] S. Chen, C. Zhang, L. Zhu, Z. Guo, A unified implicit scheme for kinetic model equations. Part I. Memory reduction technique, Science Bulletin, 62 (2016) 119–129