Results 21 to 30 of about 37,594 (263)

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

Variational nodal methods for neutron transport: 40 years in review

open access: yesNuclear Engineering and Technology, 2022
The variational nodal method for solving the neutron transport equation has evolved over 40 years. Based on a functional form of the Boltzmann neutron transport equation, the method now comprises a complete set of variants that can be employed for ...
Tengfei Zhang, Zhipeng Li
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   +3 more sources

The Quantum Statistical Mechanical Theory of Transport Processes [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 1993
A new derivation of the quantum Boltzmann transport equation for the Fermion system from the quantum time evolution equation for the wigner distribution function is presented.
Ali Maghari, Hassan Behnejad
doaj  

On discrete models of Boltzmann-type kinetic equations

open access: yesСовременная математика: Фундаментальные направления
The known nonlinear kinetic equations, in particular, the wave kinetic equation and the quantum Nordheim–Uehling–Uhlenbeck equations are considered as a natural generalization of the classical spatially homogeneous Boltzmann equation.
A. V. Bobylev
doaj   +1 more source

The Boltzmann equation and Cosmic Microwave Background

open access: yesRevista de Investigación de Física, 2023
Observations on the anisotropies of the Cosmic Microwave Background (CMB) have become a fundamental tool in Cosmology. We present a brief description of the mformalism necessary to understand the evolution of the anisotropies, and how their power ...
Mississippi Valenzuela
doaj   +1 more source

Electro-osmotic flow of a third-grade fluid past a channel having stretching walls

open access: yesNonlinear Engineering, 2019
The electro-osmotic flow of a third grade fluid past a channel having stretching walls has been studied in this paper. The channel height is taken much greater than the thickness of the electric double layer comprising of the Stern and diffuse layers ...
Parida Mamata, Padhy Sudarsan
doaj   +1 more source

Kinetic theory of gases: stochastic thermodynamics avant la lettre

open access: yesRevista Brasileira de Ensino de Física
We show that the kinetic theory of gases developed by Clausius, Maxwell, and Boltzmann can be understood as stochastic thermodynamics. This comprehension is based on the recognition that the dynamics used by Maxwell to demonstrate his distribution of ...
Mário J. de Oliveira
doaj   +1 more source

A Three-Dimensional Semiclassical Lattice Boltzmann Method for Lid-Driven Cubic Cavity Flows

open access: yesJournal of Fluid Science and Technology, 2011
A three-dimensional lattice Boltzmann method based on the Uehling-Uhlenbeck Boltzmann-BGK equation is presented. The method is directly derived by projecting the kinetic governing equation onto the tensor Hermite polynomials and various hydrodynamic ...
Jaw-Yen YANG, Li-Hsin HUNG
doaj   +1 more source

Low-Density Asymptotic Behavior of Observables of Hard Sphere Fluids

open access: yesAdvances in Mathematical Physics, 2018
The paper deals with a rigorous description of the kinetic evolution of a hard sphere system in the low-density (Boltzmann–Grad) scaling limit within the framework of marginal observables governed by the dual BBGKY (Bogolyubov–Born–Green–Kirkwood–Yvon ...
Viktor Gerasimenko, Igor Gapyak
doaj   +1 more source

Home - About - Disclaimer - Privacy