Molecular mechanics of liquid and gas slip flow

NG Hadjiconstantinou - Annual Review of Fluid Mechanics, 2024 - annualreviews.org
By taking into account the inhomogeneity introduced by the presence of a solid boundary,
slip-flow theory extends the range of applicability of the venerable Navier–Stokes …

Critical assessment of various particle Fokker–Planck models for monatomic rarefied gas flows

S Kim, H Gorji, E Jun - Physics of Fluids, 2023 - pubs.aip.org
In the past decade, the particle-based Fokker–Planck (FP) method has been extensively
studied to reduce the computational costs of the direct simulation Monte Carlo method for …

An implicit unified gas-kinetic wave–particle method for radiative transport process

C Liu, W Li, Y Wang, P Song, K Xu - Physics of Fluids, 2023 - pubs.aip.org
The unified gas-kinetic wave–particle method (UGKWP) has been developed for the
multiscale gas, plasma, and multiphase flow transport processes for the past years. In this …

Wasserstein-penalized Entropy closure: A use case for stochastic particle methods

M Sadr, NG Hadjiconstantinou, MH Gorji - Journal of Computational …, 2024 - Elsevier
We introduce a framework for generating samples of a distribution given a finite number of
its moments, targeted at particle-based solutions of kinetic equations and rarefied gas flow …

A theoretical framework of information preservation method and its application to low-speed nonequilibrium gas flows

H Yang, J Zhang - Physics of Fluids, 2023 - pubs.aip.org
Simulations of nonequilibrium gas flows have garnered significant interest in modern
engineering problems involving rarefied gas flow characteristics. Despite the popularity of …

Rarefied gas flow past a liquid droplet: Interplay between internal and external flows

R Bhattacharjee, S Saini, VK Gupta… - Journal of Fluid …, 2024 - cambridge.org
Experimental and theoretical studies on millimetre-sized droplets suggest that at low
Reynolds number the difference between the drag force on a circulating water droplet and …

[HTML][HTML] A DSMC-CFD coupling method using surrogate modelling for low-speed rarefied gas flows

G Tatsios, AK Chinnappan, A Kamal… - Journal of …, 2025 - Elsevier
Abstract A new Micro-Macro-Surrogate (MMS) hybrid method is presented that couples the
Direct Simulation Monte Carlo (DSMC) method with Computational Fluid Dynamics (CFD) to …

Efficient particle control in systems with large density gradients

EK Massaro, MA Gallis… - Journal of Computational …, 2024 - Elsevier
Simulations of large density gradients present a number of challenges for direct Monte Carlo
methods, since they lead to too few particles in dilute regions and prohibitively many in the …

Variance reduced particle solution of the Fokker-Planck equation with application to rarefied gas and plasma dynamics

M Sadr, NG Hadjiconstantinou - Journal of Computational Physics, 2023 - Elsevier
We develop an importance-weight-based variance reduction method for direct Monte Carlo
simulations of the Fokker-Planck equation with applications to rarefied gas and plasma …

Molecular-gas-dynamics simulations of turbulent Couette flow over a mean-free-path-scale permeable substrate

RM McMullen, MC Krygier, JR Torczynski, MA Gallis - Physical Review Fluids, 2023 - APS
We report flow statistics and visualizations from molecular-gas-dynamics simulations using
the direct simulation Monte Carlo (DSMC) method for turbulent Couette flow in a minimal …