3 papers
physics.flu-dyn2026
A Multispecies ESBGK Model for Gas Mixtures with Variable Hard Sphere Transport: Theory and Verification
Marcel Pfeiffer, Franziska Tuttas, Julien Mathiaud +1
A multi-species Bhatnagar-Gross-Krook (BGK) model for gas mixtures is presented that achieves the correct species-wise relaxation of velocities, temperatures, and pressure tensors…
physics.chem-ph2026
A harmonically-coupled-anharmonic-oscillator approach for polyatomic chemistry modeling in DSMC
Simone Lauterbach, Franziska Tuttas, Marcel Pfeiffer
Atmospheric entry processes are characterized by high-enthalpy gas flows in strong thermo-chemical non-equilibrium. Accurate simulations of such conditions remain challenging due t…
physics.flu-dyn2026
A Shakhov-based Bhatnagar-Gross-Krook model for polyatomic molecules and for atomic as well as polyatomic mixtures
Marcel Pfeiffer, Franziska Tuttas
The implementation of the Shakhov Bhatnagar-Gross-Krook (SBGK) method in the open-source particle code PICLas is extended for modeling of polyatomic molecules, as well as mixtures…