Results 61 to 70 of about 198,923 (186)

Structural stability of Supersonic solutions to the Euler-Poisson system

, 2019
The well-posedness for the supersonic solutions of the Euler-Poisson system for hydrodynamical model in semiconductor devices and plasmas is studied in this paper. We first reformulate the Euler-Poisson system in the supersonic region into a second order
Bae, Myoungjean, Duan, Ben, Xiao, Jingjing, Xie, Chunjing   +3 more
core   +1 more source

Hyperbolicity of the Kidder-Scheel-Teukolsky formulation of Einstein's equations coupled to a modified Bona-Masso slicing condition

, 2003
We show that the Kidder-Scheel-Teukolsky family of hyperbolic formulations of the 3+1 evolution equations of general relativity remains hyperbolic when coupled to a recently proposed modified version of the Bona-Masso slicing condition.Comment: 4 pages ...
A. Abrahams, A. Abrahams, A. Anderson, A. Anderson, Alejandro Corichi, C. Bona, C. Bona, C. Bona, C. Bona, D. Garfinkle, Darío Núñez, G. Calabrese, H. Friedrich, José A. González, L.E. Kidder, M. Alcubierre, M. Alcubierre, M. Alcubierre, M. Alcubierre, M.H. van Putten, Marcelo Salgado, Miguel Alcubierre, O. Sarbach, P.R. Brady, S. Frittelli, S. Frittelli, Y. Choquet-Bruhat   +26 more
core   +1 more source

Mass Transport in Polymers Through the Theory of Stochastic Processes Possessing Finite Propagation Velocity

Chemical Engineering Transactions, 2019
Non-Fickian behaviors in mass transport are very common in polymeric materials. The classical Fickian law, dictating the instantaneous response of the mass flux to changes in the driving force (namely the concentration gradient), seems to be too ...
Antonio Brasiello, Alessandra Adrover, Silvestro Crescitelli, Massimiliano Giona   +3 more
doaj   +1 more source

Study on Optimal Conventional Triaxial Strength Criterion of Rock Based on Gauss-Newton Method [PDF]

E3S Web of Conferences
Conventional triaxial strength criteria are used widely to judge the rock failure states. In this paper, the nonlinear least squares method (Guass-newton method) is used to fit the regression relationships between the maximum principal stress σ1 as well ...
Tian Mengtao, Guo Baohua, Zhang Zhezhe, Zhu Chuangwei, Zhong Pengbo   +4 more
doaj   +1 more source

Exponential Stability in Hyperbolic Thermoelastic Diffusion Problem with Second Sound

International Journal of Differential Equations, 2011
We consider a thermoelastic diffusion problem in one space dimension with second sound. The thermal and diffusion disturbances are modeled by Cattaneo's law for heat and diffusion equations to remove the physical paradox of infinite propagation speed in ...
Moncef Aouadi
doaj   +1 more source

Fast wavelet based algorithms for linear evolution equations [PDF]

A class was devised of fast wavelet based algorithms for linear evolution equations whose coefficients are time independent. The method draws on the work of Beylkin, Coifman, and Rokhlin which they applied to general Calderon-Zygmund type integral ...
Engquist, Bjorn, Osher, Stanley, Zhong, Sifen   +2 more
core   +1 more source

Finite Difference and Iteration Methods for Fractional Hyperbolic Partial Differential Equations with the Neumann Condition

Discrete Dynamics in Nature and Society, 2012
The numerical and analytic solutions of the mixed problem for multidimensional fractional hyperbolic partial differential equations with the Neumann condition are presented. The stable difference scheme for the numerical solution of the mixed problem for
Allaberen Ashyralyev, Fadime Dal
doaj   +1 more source

Efficient Implementation of ADER Discontinuous Galerkin Schemes for a Scalable Hyperbolic PDE Engine

Axioms, 2018
In this paper we discuss a new and very efficient implementation of high order accurate arbitrary high order schemes using derivatives discontinuous Galerkin (ADER-DG) finite element schemes on modern massively parallel supercomputers.
Michael Dumbser, Francesco Fambri, Maurizio Tavelli, Michael Bader, Tobias Weinzierl   +4 more
doaj   +1 more source

An unsteady squeezed flow of a tangent hyperbolic fluid over a sensor surface in the presence of variable thermal conductivity

Results in Physics, 2017
The paper explores the numerical study on squeezed flow of tangent hyperbolic fluid over a sensor surface with variable thermal conductivity. The governing equations are reassembling into ordinary non-linear differential equations by using suitable ...
K. Ganesh Kumar, B.J. Gireesha, M.R. Krishanamurthy, N.G. Rudraswamy   +3 more
doaj   +1 more source

Method for Remote Determination of Object Coordinates in Space Based on Exact Analytical Solution of Hyperbolic Equations. [PDF]

Sensors (Basel), 2020
Kuptsov V, Badenko V, Ivanov S, Fedotov A.   +3 more
europepmc   +1 more source