3 papers
physics.plasm-ph2024
A Non-Negative Least Squares-based Approach for Moment-Preserving Particle Merging
Georgii Oblapenko
In the present work, a novel particle merging scheme is proposed for PIC-DSMC simulations, based on the solution of a Non-negative Least Squares problem. The merging algorithm cons…
physics.flu-dyn2024
Entropy-stable fluxes for high-order Discontinuous Galerkin simulations of high-enthalpy flows
Georgii Oblapenko, Arseniy Tarnovskiy, Moritz Ertl +1
In the present work, we extend the Discontinuous Galerkin Spectral Element Method (DGSEM) to high-enthalpy reacting gas flows with internal degrees of freedom. An entropy- and kine…
physics.flu-dyn2023
Use of Tensor-Train Decompositions with a Discrete Velocity Boltzmann Solver
Georgii Oblapenko
In the present work, the Tensor-Train decomposition algorithm is applied to reduce the memory footprint of a stochastic discrete velocity solver for rarefied gas dynamics simulatio…