5 papers
Physics-informed Neural Networks Based on the Fokker-Planck Model for Rarefied Gas Flows
Joonbeom Kim, Eunji Jun
Rarefied nonequilibrium flows are described by the Boltzmann equation, which can be solved using stochastic particle or deterministic methods. With advances in computing, data-assi…
Development of a Particle Bhatnagar-Gross-Krook Method for Rarefied Monatomic Gas Mixtures
Inchan Kim, Joonbeom Kim, Woonghwi Park +1
The Direct Simulation Monte Carlo (DSMC) method has long served as a reliable numerical approach for simulating rarefied and non-equilibrium gas flows. Its computational cost, howe…
A Particle Multi-Relaxation Bhatnagar-Gross-Krook Method for Rarefied Monatomic Gas Mixtures
Inchan Kim, Joonbeom Kim, Woonghwi Park +1
Kinetic models based on the Bhatnagar-Gross-Krook (BGK) framework provide an efficient alternative to the Boltzmann equation for rarefied gas flows; however, existing formulations…
Radiative equilibrium boundary condition and correlation analysis on catalytic surfaces in DSMC
Youngil Ko, Eunji Jun
This study integrates radiative equilibrium boundary conditions on a catalytic surface within the Direct Simulation Monte Carlo (DSMC) method. The radiative equilibrium boundary co…
Effects of Surface Corrugation on Gas-Surface Scattering and Macroscopic Flows
Woonghwi Park, Eunji Jun
Gas-surface scattering exhibits a transition from thermal to structure scattering regime as incident energy increases, characterized by changes in angular and energy distributions.…