Results 21 to 30 of about 1,297,051 (280)

Transient Simulation of Semiconductor Devices Using a Deterministic Boltzmann Equation Solver

open access: yesIEEE Journal of the Electron Devices Society, 2018
In this paper, the transient simulation of semiconductor devices using a deterministic Boltzmann equation solver is presented. Transient simulation capability is implemented in a deterministic Boltzmann equation solver for the 3-D momentum space based on
Sung-Min Hong, Jae-Hyung Jang
doaj   +1 more source

Toward a Lattice Boltzmann Method for Solids—Application to Static Equilibrium of Isotropic Materials

open access: yesApplied Sciences, 2022
This work presents a novel method for simulating the behavior of solid objects with the Lattice Boltzmann Method (LBM). To introduce and validate our proposed framework, comparative studies are performed for computing the static equilibrium of isotropic ...
Tristan Maquart   +3 more
doaj   +1 more source

Investigation of hydrodynamic parameters inside a gas centrifuge rotor in the presence of hydrogen fluoride and air light gases using DSMC and Boltzmann distribution function [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2020
The Boltzmann equation which describes binary collisions between molecules is a very important equation in physics and fluid dynamics. Direct Monte Carlo simulation is one of the methods to solve the Boltzmann equation. The moisture can leak to the fluid
M. Khajenoori   +3 more
doaj   +1 more source

Boundary Layers and Shock Profiles for the Broadwell Model

open access: yesInternational Journal of Differential Equations, 2016
We consider the existence of nonlinear boundary layers and the typically nonlinear problem of existence of shock profiles for the Broadwell model, which is a simplified discrete velocity model for the Boltzmann equation.
Niclas Bernhoff
doaj   +1 more source

Jeans instability from post-Newtonian Boltzmann equation

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
Jeans instability within the framework of post-Newtonian Boltzmann and Poisson equations are analyzed. The components of the energy–momentum tensor are calculated from a post-Newtonian Maxwell-Jüttner distribution function.
Gilberto M. Kremer
doaj   +1 more source

Matrix lattice Boltzmann reloaded [PDF]

open access: yes, 2011
The lattice Boltzmann equation has been introduced about twenty years ago as a new paradigm for computational fluid dynamics. In this paper, we revisit the main formulation of the lattice Boltzmann collision integral (matrix model) and introduce a new ...
Asinari, P.   +11 more
core   +1 more source

Generalized Boltzmann solution for non-equilibrium flows and the computation of flowfields of binary gas mixture

open access: yesPropulsion and Power Research, 2012
Hypersonic flows about space vehicles produce flowfields in thermodynamic non-equilibrium with the local Knudsen numbers Kn which may lie in all the three regimes: continuum, transition and rarefied.
Baoguo Wang   +3 more
doaj   +1 more source

Direct numerical simulation of complex viscoelastic flows via fast lattice-Boltzmann solution of the Fokker–Planck equation [PDF]

open access: yes, 2013
Micro–macro simulations of polymeric solutions rely on the coupling between macroscopic conservation equations for the fluid flow and stochastic differential equations for kinetic viscoelastic models at the microscopic scale.
Izquierdo, S.   +6 more
core   +1 more source

Acceleration of Boltzmann Collision Integral Calculation Using Machine Learning

open access: yesMathematics, 2021
The Boltzmann equation is essential to the accurate modeling of rarefied gases. Unfortunately, traditional numerical solvers for this equation are too computationally expensive for many practical applications.
Ian Holloway   +2 more
doaj   +1 more source

The dissipative linear boltzmann equation

open access: yesApplied Mathematics Letters, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Giampiero Spiga, Giuseppe Toscani
openaire   +4 more sources

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