Results 11 to 20 of about 14,490,979 (304)

Dissipation and discretization in time marching CFD calculation [PDF]

, 1995
This thesis concentrates on accuracy improvements for an existing software package that solves the three dimensional Reynolds Averaged Navier-Stokes equations in rotating coordinates. It is a cell centred explicit time marching code.
Alimin, E. K.
core   +7 more sources

An hp-version discontinuous Galerkin method for integro-differential equations of parabolic type [PDF]

, 2011
We study the numerical solution of a class of parabolic integro-differential equations with weakly singular kernels. We use an $hp$-version discontinuous Galerkin (DG) method for the discretization in time.
Brunner, Hermann, Schoetzau, D, Mustapha, Kassem, Mustapha, Hussein   +3 more
core   +4 more sources

Improvement of the time marching method in a particle method

Nihon Kikai Gakkai ronbunshu, 2021
This study concerns the computational accuracy of a particle method for a time-dependent incompressible flow. In recent years, accurate spatial discretization schemes have been developed for a particle method.
Takuya MATSUNAGA, Seiichi KOSHIZUKA
doaj   +1 more source

WENO Scheme Based on Lax-Wendroff Time Discretization to Solving Hyperbolic Conservation Laws

Journal of Harbin University of Science and Technology, 2017
The research of high accuracy and high resolution schemes have been a hot topic in computational mathematics． According to low resolution and large amount of calculation of the original WENO-JS scheme，we propose a simple new limiter fifth order upwind ...
LI Xing-hua, SUN Yang, AI Xiao-hui
doaj   +1 more source

Observation of a discrete time crystal [PDF]

Nature, 2017
9 pages, 8 ...
Hess, P.W., Zhang, J., Kyprianidis, A., Becker, P., Lee, A., Smith, J., Pagano, G., Potirniche, I.-D., Potter, A.C., Vishwanath, Ashvin, Yao, N.Y., Monroe, C.   +11 more
openaire   +5 more sources

Discrete time quasicrystals [PDF]

Physical Review B, 2019
Version accepted for publication in Phys. Rev.
Giergiel, Krzysztof, Kuroś, Arkadiusz, Sacha, Krzysztof   +2 more
openaire   +3 more sources

A note on the necessity of filtering mechanism for polynomial observability of time-discrete wave equation

Karpatsʹkì Matematičnì Publìkacìï, 2017
The problem of uniform polynomial observability was recently analyzed. It is shown that, when the continuous model is uniformly polynomially observable, it is sufficient to filter initial data to derive uniform polynomial observability inequalities for ...
Z. Hajjej
doaj   +1 more source

A posteriori analysis of the spectral element discretization of a non linear heat equation

Advances in Nonlinear Analysis, 2020
The paper deals with a posteriori analysis of the spectral element discretization of a non linear heat equation. The discretization is based on Euler’s backward scheme in time and spectral discretization in space. Residual error indicators related to the
Abdelwahed Mohamed, Chorfi Nejmeddine
doaj   +1 more source

Discrete-time model reference control schemes of milling forces using fractional order holds [PDF]

, 2007
Increasing competence makes to develop and implement more complex control schemes on manufacturing environments. In this paper, a discrete time model reference control for practical milling using different discretization of the continuous-time plant is ...
M. de la Sen, De la Sen Parte, Manuel, L. Rubio, Rubio Rodriguez, Luis   +3 more
core   +1 more source

Spectro-consistent discretization of Navier-Stokes: a challenge to RANS and LES [PDF]

, 1998
In this paper, we discuss the results of a fourth-order, spectro-consistent discretization of the incompressible Navier-Stokes equations. In such an approach the discretization of a (skew-)symmetric operator is given by a (skew-)symmetric matrix ...
Veldman, A.E.P., Verstappen, R.W.C.P., R. W. C. P. Verstappen, Verstappen, R.W.C.P.,, Veldman, A.E.P.,, A. E. P. Veldman   +5 more
core   +1 more source