3 papers
physics.flu-dyn2026
Implementation and Extension of the Variance-Reduced BGK Method in PICLas
Leon Teichröb, Félix Garmirian, Marcel Pfeiffer
Traditional particle-based kinetic methods, such as DSMC, suffer from prohibitive computational cost in low-signal flows, where the deviation from thermodynamic equilibrium is smal…
physics.flu-dyn2025
Implementation of Asymptotic Preserving Discrete Velocity Methods into the Simulation Code PICLas
Félix Garmirian, Marcel Pfeiffer
The Bhatnagar-Gross-Krook (BGK) model of the Boltzmann equation allows for efficient flow simulations, especially in the transition regime between continuum and high rarefaction. H…
physics.flu-dyn2024
Crank-Nicolson BGK Integrator for Multi-Scale Particle-Based Kinetic Simulations
Marcel Pfeiffer, Félix Garmirian, Tobias Ott
Solving the Bhatnagar-Gross-Krook (BGK) equation with a stochastic particle approach enables efficient and flexible simulations of flows in the transition regime, between continuum…