Results 61 to 70 of about 28,118,061 (306)

Dynamics of Bio‐Convection Two‐Phase Nanofluid Flow in an Entropy‐Optimized Non‐Newtonian Model With Nonlinear Thermal Radiation and Electromagnetic Effects

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT The study of nanofluids has attracted significant attention due to their superior thermophysical properties, making them ideal for thermal transport in engineering and biomedical applications. Motivated by these capabilities, this study develops a novel three‐dimensional mathematical model for electrically conducting Sutterby nanofluids ...
A. M. Obalalu   +4 more
wiley   +1 more source

A Discontinuous Galerkin Method for Ideal Two-Fluid Plasma Equations

open access: yes, 2010
A discontinuous Galerkin method for the ideal 5 moment two-fluid plasma system is presented. The method uses a second or third order discontinuous Galerkin spatial discretization and a third order TVD Runge-Kutta time stepping scheme.
Ammar Hakim   +8 more
core   +1 more source

Description and Convergence Order Analysis of the Finite Element‐Volume Spatial Discretization Method

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
This article presents the principles of Finite Element‐Volume discretization and conducts an analysis of its properties and convergence orders. The discretization ensures local mass conservation, second‐order convergence for velocity, and first‐order convergence for pressure.
Maria Adela Puscas   +3 more
wiley   +1 more source

Interior penalty discontinuous Galerkin FEM for the $p(x)$-Laplacian

open access: yes, 2012
In this paper we construct an "Interior Penalty" Discontinuous Galerkin method to approximate the minimizer of a variational problem related to the $p(x)-$Laplacian.
Ariel L. Lombardi   +4 more
core   +1 more source

A primal-dual weak Galerkin finite element method for second order elliptic equations in non-divergence form [PDF]

open access: yesMathematics of Computation, 2015
This article proposes a new numerical algorithm for second order elliptic equations in non-divergence form. The new method is based on a discrete weak Hessian operator locally constructed by following the weak Galerkin strategy. The numerical solution is
Chunmei Wang, Junping Wang
semanticscholar   +1 more source

Space‐Time Modeling and Numerical Simulations of Non‐Newtonian Fluids Using Internal Variables

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
Based on Hamilton's principle, the study focuses on a novel strategy for the modeling of non‐Newtonian fluids with the help of internal variables. Here, the viscosity evolves locally in space and time. Three configurations are numerically implemented, namely channel flow, a benchmark, and a lid‐driven cavity.
Philipp Junker, Thomas Wick
wiley   +1 more source

Wavelet Galerkin method for fractional elliptic differential equations [PDF]

open access: yes, 2014
Under the guidance of the general theory developed for classical partial differential equations (PDEs), we investigate the Riesz bases of wavelets in the spaces where fractional PDEs usually work, and their applications in numerically solving fractional ...
Deng, Weihua   +2 more
core  

Spline Galerkin methods for the Sherman-Lauricella equation on contours with corners

open access: yes, 2015
Spline Galerkin approximation methods for the Sherman-Lauricella integral equation on simple closed piecewise smooth contours are studied, and necessary and sufficient conditions for their stability are obtained.
Didenko, Victor D.   +2 more
core   +1 more source

Fully Discrete Local Discontinuous Galerkin Approximation for Time-Space Fractional Subdiffusion/Superdiffusion Equations

open access: yesAdvances in Mathematical Physics, 2017
We focus on developing the finite difference (i.e., backward Euler difference or second-order central difference)/local discontinuous Galerkin finite element mixed method to construct and analyze a kind of efficient, accurate, flexible, numerical schemes
Meilan Qiu, Liquan Mei, Dewang Li
doaj   +1 more source

A Filter‐Matrix Lattice‐Boltzmann Methodology for Convective Melting and Solidification

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
We propose a new methodology for simulating melting and solidification that can be used in lattice‐Boltzmann schemes that are based on filter‐matrix collision operators. The methodology includes an iteration‐free source‐based enthalpy method for phase‐change and an immersed boundary technique.
Celeke Bus   +2 more
wiley   +1 more source

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