Results 11 to 20 of about 3,788,726 (334)

The halo Boltzmann equation [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2016
23 pages, 3 figures, comments are welcome, v2 matches published version in ...
Biagetti Matteo   +4 more
openaire   +2 more sources

Particle production from oscillating scalar field and consistency of Boltzmann equation

open access: yesJournal of High Energy Physics, 2021
Boltzmann equation plays important roles in particle cosmology in studying the evolution of distribution functions (also called as occupation numbers) of various particles.
Takeo Moroi, Wen Yin
doaj   +1 more source

An Explicit Formulation of Singularity-Free Dynamic Equations of Mechanical Systems in Lagrangian Form---Part Two: Multibody Systems [PDF]

open access: yesModeling, Identification and Control, 2012
This paper presents the explicit dynamic equations of multibody mechanical systems. This is the second paper on this topic. In the first paper the dynamics of a single rigid body from the Boltzmann--Hamel equations were derived.
Pål Johan From
doaj   +1 more source

Existence of global weak solutions for the Navier–Stokes–Vlasov–Boltzmann equations [PDF]

open access: yesJournal of Differential Equations, 2016
The moderately thick spray can be described by a coupled system of equations consisting of the incompressible Navier-Stokes equations and the Vlasov-Boltzmann equation. We investigate this kind of mathematical model in this paper. In particular, we study
Lei Yao, Cheng Yu
semanticscholar   +1 more source

On Derivation of the Poisson–Boltzmann Equation [PDF]

open access: yesJournal of Statistical Physics, 2020
Starting from the microscopic reduced Hartree-Fock equation, we derive the nanoscopic linearized Poisson-Boltzmann equation for the electrostatic potential associated with the electron density.
Ilias, Chenn, Sigal, Israel Michael
openaire   +3 more sources

A gradient flow approach to linear Boltzmann equations [PDF]

open access: yes, 2017
We introduce a gradient flow formulation of linear Boltzmann equations. Under a diffusive scaling we derive a diffusion equation by using the machinery of gradient flows.
G. Basile, D. Benedetto, L. Bertini
semanticscholar   +1 more source

Solving the Boltzmann equation on GPUs [PDF]

open access: yesComputer Physics Communications, 2011
18 pages, 3 pseudo-codes, 6 figures, 1 ...
Aldo Frezzotti   +2 more
openaire   +3 more sources

On the computation of viscous fluid flows by the lattice Boltzmann method [PDF]

open access: yesКомпьютерные исследования и моделирование, 2013
Modification of the lattice Boltzmann method for computation of viscous Newtonian fluid flows is considered. Modified method is based on the splitting of differential operator in Navier-Stokes equation and on the idea of instantaneous Maxwellisation of ...
Gerasim Vladimirovich Krivovichev
doaj   +1 more source

Solving Stochastic Nonlinear Poisson-Boltzmann Equations Using a Collocation Method Based on RBFs

open access: yesMathematics, 2023
In this paper, we present a numerical scheme based on a collocation method to solve stochastic non-linear Poisson–Boltzmann equations (PBE). This equation is a generalized version of the non-linear Poisson–Boltzmann equations arising from a form of ...
Samaneh Mokhtari   +4 more
doaj   +1 more source

From Boltzmann equations to steady wall velocities [PDF]

open access: yes, 2014
By means of a relativistic microscopic approach we calculate the expansion velocity of bubbles generated during a first-order electroweak phase transition.
T. Konstandin, G. Nardini, Ingo Rues
semanticscholar   +1 more source

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