Results 1 to 10 of about 323,617 (239)

Particles in finite volumes and a toy model of decaying neutrons [PDF]

open access: diamondEuropean Physical Journal C: Particles and Fields
It is well-known that the momentum spectra of particles confined to finite spatial volumes deviate from the continuous spectra used for unconfined particles.
Christian Käding
doaj   +4 more sources

Adaptive wavelet schemes and finite volumes [PDF]

open access: diamondESAIM: Proceedings and Surveys, 2021
We consider a procedure for combining high order finite volumes and tree-based nonuniform grids. Especially, we focus on efficient algorithms for third order multidimensional volume interpolation and communication between levels of refinement. In the end,
Del Sarto Daniele   +3 more
doaj   +2 more sources

Influence of cement-augmented pedicle screws with different volumes of polymethylmethacrylate in osteoporotic lumbar vertebrae over the adjacent segments: a 3D finite element analysis [PDF]

open access: greenBMC Musculoskeletal Disorders, 2020
Background Polymethylmethacrylate (PMMA) is commonly used for cement-augmented pedicle screw instrumentation (CAPSI) to improve the fixation stability and reduce the risk of screw loosening in the osteoporotic thoracolumbar spine.
Hui-zhi Guo   +9 more
doaj   +2 more sources

Generalized boost transformations in finite volumes and application to Hamiltonian methods [PDF]

open access: greenJournal of High Energy Physics
The investigation of hadron interactions within lattice QCD has been facilitated by the well-known quantisation condition, linking scattering phase shifts to finite-volume energies.
Yan Li   +3 more
doaj   +2 more sources

Numerical modeling of the flow in a completely saturated zone

open access: yesAlexandria Engineering Journal, 2022
The flow through saturated porous soil is described by Darcy equation that generally has no analytical solution. Therefore, we have to use numerical methods to solve it. There exist several numerical methods and the well-known most used one is the finite
A. Charhabil   +3 more
doaj   +1 more source

MOOSE Navier–Stokes module

open access: yesSoftwareX, 2023
The MOOSE Navier–Stokes module solves mass, momentum, energy, and passive scalar conservation equations in the context of fluid flow. The module supports solution of these equations in both free flow and porous medium contexts and for a range of fluid ...
Alexander Lindsay   +13 more
doaj   +1 more source

Modeling COVID-19 Using a Modified SVIR Compartmental Model and LSTM-Estimated Parameters

open access: yesMathematics, 2023
This article presents a modified version of the SVIR compartmental model for predicting the evolution of the COVID-19 pandemic, which incorporates vaccination and a saturated incidence rate, as well as piece-wise time-dependent parameters that enable ...
Alejandra Wyss, Arturo Hidalgo
doaj   +1 more source

Study of Heat Recovery Equipment for Building Applications

open access: yesBuildings, 2023
Nowadays, heat exchangers find widespread use across various applications in different fields, particularly in the field of heat recovery. This paper provides a detailed explanation of a plate heat exchanger counter-flow model developed in Simulink ...
Lelia Letitia Popescu   +2 more
doaj   +1 more source

Numerical treatment of a magnetized electron fluid model in a 3D simulator of plasma thruster plumes

open access: yesFrontiers in Physics, 2023
Simulations of energetic plumes from plasma thrusters are of great interest for estimating performances and interactions with the spacecraft. Both in fully fluid and hybrid (particle/fluid) models, the electron population is described by a set of fluid ...
Alberto Modesti   +2 more
doaj   +1 more source

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