[HTML][HTML] A second-order particle Fokker-Planck model for rarefied gas flows

S Kim, W Park, E Jun - Computer Physics Communications, 2024 - Elsevier
Abstract The direct simulation Monte Carlo (DSMC) method has become a powerful tool for
studying rarefied gas flows. However, for the DSMC method to be effective, the cell size must …

An evaluation of the hybrid Fokker–Planck-DSMC approach for high-speed rarefied gas flows

S Kim, E Jun - Computers & Fluids, 2024 - Elsevier
Abstract The Direct Simulation Monte Carlo (DSMC) method has been widely used for
simulations of rarefied gas flows. It has been proven that the numerical solution of the DSMC …

Exponential Bhatnagar-Gross-Krook integrator for multiscale particle-based kinetic simulations

M Pfeiffer, F Garmirian, MH Gorji - Physical Review E, 2022 - APS
Despite the development of an extensive toolbox of multiscale rarefied flow simulators, such
simulations remain challenging due to the significant disparity of collisional and …

Optimisation of satellite geometries in Very Low Earth Orbits for drag minimisation and lifetime extension

F Hild, C Traub, M Pfeiffer, J Beyer, S Fasoulas - Acta Astronautica, 2022 - Elsevier
The utilisation of the Very Low Earth Orbit (VLEO) region offers significant application
specific, technological, operational, and cost benefits. However, attaining sustained and …

A hybrid particle approach based on the unified stochastic particle Bhatnagar-Gross-Krook and DSMC methods

F Fei, P Jenny - Journal of Computational Physics, 2021 - Elsevier
For the simulation of multiscale gas flows, the numerical scheme should be valid and
efficient in both rarefied and continuum regimes. For example, the Direct Simulation Monte …

Non-equilibrium radiation modeling in a gas kinetic simulation code

J Beyer, M Pfeiffer, S Fasoulas - Journal of Quantitative Spectroscopy and …, 2022 - Elsevier
Radiation modeling is implemented in the highly parallel gas kinetic, open-source plasma
simulation suite PICLas. A photon Monte Carlo approach for three-dimensional radiative …

A stochastic particle Fokker–Planck method with nonlinear production terms for a variable hard-sphere gas

S Kim, E Jun - Physics of Fluids, 2022 - pubs.aip.org
The stochastic particle Fokker–Planck (FP) method has been gaining increasing attention in
the field of rarefied gas dynamics due to its potential to reduce the computational costs of the …

Micronozzle for satellite propulsion and mixture separation: a review

MK Sukesan, SR Shine - Journal of Thermal Analysis and Calorimetry, 2023 - Springer
Micronozzles operating with vacuum exit conditions find applications in satellite propulsion
systems and aerodynamic separation processes. The increased demand for cube satellite …

[HTML][HTML] Multi-species modeling in the particle-based ellipsoidal statistical Bhatnagar-Gross-Krook method including internal degrees of freedom

F Hild, M Pfeiffer - Journal of Computational Physics, 2024 - Elsevier
The implementation of the ellipsoidal statistical Bhatnagar-Gross-Krook (ESBGK) method in
the open-source particle code PICLas is extended for multi-species modeling of polyatomic …

Multi-species modeling in the particle-based ellipsoidal statistical Bhatnagar–Gross–Krook method for monatomic gas species

M Pfeiffer, A Mirza, P Nizenkov - Physics of Fluids, 2021 - pubs.aip.org
Multi-species modeling is implemented for the particle-based ellipsoidal statistical
Bhatnagar–Gross–Krook method for monatomic species in the open-source plasma …