Results 61 to 70 of about 96,751 (277)

Numerical and experimental study on P‐wave propagation across a rock joint with different orientations

Deep Underground Science and Engineering, EarlyView.
Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei, Mojtaba D. fallahi, Ali Uromeihy, Mohammad R. Nikoodel, Mohammad Fathollahy   +4 more
wiley   +1 more source

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

Advances 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

Magneto‐Hydrothermal and Entropy Analysis of Double‐Diffusive Convection in a Nano‐Encapsulated PCM‐Suspended Elliptical Pipes Thermal Storage Tank: Impact of Exothermic Reaction

Energy Science &Engineering, EarlyView.
ABSTRACT PCMs store thermal energy during phase transitions without temperature changes, making them valuable for various thermal applications. When direct PCM use isn't practical, researchers have developed encapsulation methods as an alternative approach.
Mohammed Azeez Alomari, Ahmed M. Hassan, Abdellatif M. Sadeq, Faris Alqurashi, Mujtaba A. Flayyih   +4 more
wiley   +1 more source

Large deformation analysis of elastic bodies by nonlinear Petrov–Galerkin natural element method

Advances in Mechanical Engineering, 2019
A two-dimensional nonlinear Petrov–Galerkin natural element method is presented for the large deformation analysis of elastic structures. The large deformation problem is formulated according to the linearized total Lagrangian method based on Taylor ...
HW Lee, JR Cho
doaj   +1 more source

A Discontinuous Galerkin Method for Ideal Two-Fluid Plasma Equations

, 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, Bhattacharjee, Biswas, Cockburn, Cockburn, Durran, John Loverich, Solovev, Uri Shumlak   +8 more
core   +1 more source

Synergistic Heat Transfer Enhancement in Triangular Enclosures: Hybrid Nanofluid‐Porous Wavy Fin Systems Under Magnetohydrodynamic and Radiation Effects

Energy Science &Engineering, EarlyView.
ABSTRACT This study numerically investigates thermal transport and fluid dynamics in a triangular cavity filled with a MgO–Ag–H2O hybrid nanofluid containing an undulating porous fin under electromagnetic field and thermal radiation influences. The governing equations are solved numerically using the Galerkin finite element methodology with Darcy ...
Adil Abbas Alwan, Mohammed Azeez Alomari, Ahmed M. Hassan, Ameer K. Salho, Abdellatif M. Sadeq, Faris Alqurashi, Mujtaba A. Flayyih, Mohammad Ghalambaz   +7 more
wiley   +1 more source

A Compact Difference-Galerkin Spectral Method of the Fourth-Order Equation with a Time-Fractional Derivative

Fractal and Fractional
In this article, we proposed a compact difference-Galerkin spectral method for the fourth-order equation in multi-dimensional space with the time-fractional derivative order α∈(1,2).
Yujie Wang, Shichao Yi
doaj   +1 more source

An effective computational approach based on Gegenbauer wavelets for solving the time-fractional Kdv-Burgers-Kuramoto equation

Advances in Difference Equations, 2019
In this paper, our purpose is to present a wavelet Galerkin method for solving the time-fractional KdV-Burgers-Kuramoto (KBK) equation, which describes nonlinear physical phenomena and involves instability, dissipation, and dispersion parameters.
Aydin Secer, Neslihan Ozdemir
doaj   +1 more source

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

, 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, Kováčik O., Leandro M. Del Pezzo, Samko S., Sandra Martínez   +4 more
core   +1 more source

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

International 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