176 citations · 429 across the 19 of their papers we have counts for
19 papers
Data-driven modeling of hypersonic flows in chemical non-equilibrium with catalytic surfaces
Konstantinos Sarras, Louis Walpot, Thierry Magin +2
Hypersonic flows involve extreme thermochemical non-equilibrium, where strong energy dissipation leads to tightly coupled chemical reactions, radiation, and energy exchange. In thi…
Numerical simulation of rarefied supersonic flows using a fourth-order maximum-entropy moment method with interpolative closure
Stefano Boccelli, Willem Kaufmann, Thierry E. Magin +1
Maximum-entropy moment methods allow for the modelling of gases from the continuum regime to strongly rarefied conditions. The development of approximated solutions to the entropy…
Modelling high-Mach-number rarefied crossflows past a flat plate using the maximum-entropy moment method
Stefano Boccelli, Pietro Parodi, Thierry E. Magin +1
The 10 and 14-moment maximum-entropy methods are applied to the study of high-Mach-number non-reacting crossflows past a flat plate at large degrees of rarefaction. The moment solu…
Data-driven modeling of hypersonic reentry flow with heat and mass transfer
Leonidas Gkimisis, Bruno Ricardo Barros Dias, James B. Scoggins +3
The entry phase constitutes a design driver for aerospace systems that include such a critical step. This phase is characterized by hypersonic flows encompassing multiscale phenome…
14-moment maximum-entropy modelling of collisionless ions for Hall thruster discharges
Stefano Boccelli, James G. McDonald, Thierry E. Magin
Ions in Hall effect thrusters are often characterized by a low collisionality. In the presence of acceleration fields and azimuthal electric field waves, this results in strong dev…
Numerical investigation of reversed gas feed configurations for Hall thrusters
Stefano Boccelli, Thierry E. Magin, Aldo Frezzotti
A reversed gas feed configuration for Hall thrusters is proposed and studied numerically. As an alternative to standard direct injection, we investigate the effect of injecting the…
A 14-moment maximum-entropy description of electrons in crossed electric and magnetic fields
Stefano Boccelli, Fabien Giroux, Thierry E. Magin +2
A 14-moment maximum-entropy system of equations is applied to the description of non-equilibrium electrons in crossed electric and magnetic fields and in the presence of low collis…
How to build coarse-grain transport models consistent from the kinetic to fluid regimes
Erik Torres, Georgios Bellas-Chatzigeorgis, Thierry E. Magin
In this paper, we examine how to build coarse-grain transport models consistently from the kinetic to fluid regimes. The internal energy of the gas particles is described through a…
A surrogate-based optimal likelihood function for the Bayesian calibration of catalytic recombination in atmospheric entry protection materials
Anabel del Val, Olivier P. Le Maître, Olivier Chazot +2
This work deals with the inference of catalytic recombination parameters from plasma wind tunnel experiments for reusable thermal protection materials. One of the critical factors…
Collisionless ion modeling in Hall thrusters: analytical axial velocity distribution function and heat flux closures
Stefano Boccelli, Thomas Charoi, Alejandro Alvarez-Laguna +3
The genesis of the ion axial velocity distribution function (VDF) is analyzed for collisionless Hall thruster discharges. An analytical form for the VDF is obtained from the Vlasov…
Mutation++: MUlticomponent Thermodynamic And Transport properties for IONized gases in C++
James B. Scoggins, Vincent Leroy, Georgios Bellas-Chatzigeorgis +2
The Mutation++ library provides accurate and efficient computation of physicochemical properties associated with partially ionized gases in various degrees of thermal nonequilibriu…
An asymptotic preserving well-balanced scheme for the isothermal fluid equations in low-temperature plasma applications
Alejandro Alvarez Laguna, Teddy Pichard, Thierry Magin +3
We present a novel numerical scheme for the efficient and accurate solution of the isothermal two-fluid (electron and ion) equations coupled to Poisson's equation for low-temperatu…
Lagrangian diffusive reactor for detailed thermochemical computations of plasma flows
Stefano Boccelli, Federico Bariselli, Bruno Dias +1
The simulation of thermochemical nonequilibrium for the atomic and molecular energy level populations in plasma flows requires a comprehensive modeling of all the elementary collis…
Coupling of state-resolved rovibrational coarse-grain model for nitrogen to stochastic particle method for simulating internal energy excitation and dissociation
Erik Torres, Thierry E. Magin
We propose to couple a state-resolved rovibrational coarse-grain model to a stochastic particle method for simulating internal energy excitation and dissociation of a molecular gas…
State-resolved coarse-grain cross sections for rovibrational excitation and dissociation of nitrogen based on ab initio data for the N2-N system
Erik Torres, Richard L. Jaffe, David Schwenke +1
In this paper, we present a method to generate state-resolved reaction cross sections in analytical form for rovibrational energy excitation and dissociation of a molecular gas. Th…
Consistent transport properties in multicomponent two-temperature magnetized plasmas:
Alejandro Alvarez Laguna, Quentin Wargnier, A. Laguna +4
A fluid model is developed for multicomponent two-temperature magnetized plasmas in chemical non-equilibrium from the partially- to fully-ionized collisional regimes. We focus on t…
Numerical treatment of the nonconservative product in a multiscale fluid model for plasmas in thermal nonequilibrium: application to solar physics
Quentin Wargnier, Sylvain Faure, Benjamin Graille +2
This contribution deals with the modeling of collisional multicomponent magnetized plasmas in thermal and chemical nonequilibrium aiming at simulating and predicting magnetic recon…
A Spectral-Lagrangian Boltzmann Solver for a Multi-Energy Level Gas
Alessandro Munafo, Jeffrey R. Haack, Irene M. Gamba +1
In this paper a spectral-Lagrangian method for the Boltzmann equation for a multi-energy level gas is proposed. Internal energy levels are treated as separate species and inelastic…
Kinetic Theory of Plasmas: Translational Energy
Benjamin Graille, Thierry E. Magin, Marc Massot
In the present contribution, we derive from kinetic theory a unified fluid model for multicomponent plasmas by accounting for the electromagnetic field influence. We deal with a po…