Results 21 to 30 of about 1,410,787 (301)

Discontinuous Galerkin methods for computational aerodynamics - 3D adaptive flow simulation with the DLR PADGE code [PDF]

open access: yes, 2010
Over the last years, the discontinuous Galerkin method (DGM) has demonstrated its excellence in accurate, high-order numerical simulations for a wide range of applications in computational physics.
Ralf Hartmann   +10 more
core   +1 more source

Anisotropic equations in $L^1$

open access: yesDifferential and Integral Equations, 1996
Let \(\mu\) be a bounded Radon measure on \(\Omega\). The authors prove existence of a solution of the anisotropic quasilinear Dirichlet problem \[ - \sum^n_{i= 1} {\partial\over \partial x_i} \Biggl(\Biggl|{\partial u\over \partial x_i}\Biggr|^{p_i- 2} {\partial u\over \partial x_i}\Biggr)= \mu \quad \text{in }\Omega,\quad u= 0\quad \text{on }\partial
L. BOCCARDO   +2 more
openaire   +4 more sources

Existence Of Two Positive Solutions For Anisotropic Nonlinear Elliptic Equations

open access: yes, 2021
This paper deals with the existence of nontrivial solutions for a class of nonlinear elliptic equations driven by an anisotropic Laplacian operator.
Sciammetta, A, D'Agui, G, Bonanno, G
core   +1 more source

Conditioning of finite element equations with arbitrary anisotropic meshes [PDF]

open access: yes, 2014
This is the published version, also available here: http://dx.doi.org/10.1090/S0025-5718-2014-02822-6. First published in Math. Comput. in 2014, published by the American Mathematical SocietyBounds are developed for the condition number of the linear ...
Kamenski, Lennard   +2 more
core   +2 more sources

Propagation of electromagnetic waves in anisotropic magnetoelectric medium

open access: yesҚарағанды университетінің хабаршысы. Физика сериясы, 2019
In the article we consider porpagation and interaction of electromagnetic waves of different polarization, in anisotropic medium that is inhomogeneous along the Z axis with magnetoelectric effect of tetragonal, trigonal, and hexagonal symmetries are ...
S.K. Tleukenov   +2 more
doaj   +1 more source

Maximum principles, Liouville-type theorems and symmetry results for a general class of quasilinear anisotropic equations

open access: yesAdvances in Nonlinear Analysis, 2016
This paper is concerned with a general class of quasilinear anisotropic equations. We first derive some maximum principles for two appropriate P-functions, in the sense of Payne (see the book of Sperb [18]).
Barbu Luminita, Enache Cristian
doaj   +1 more source

Minimal Geometric Deformation: the inverse problem

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
In this paper we show that any static and spherically symmetric anisotropic solution of the Einstein field equations can be thought as a system sourced by certain deformed isotropic system in the context of Minimal Geometric Deformation-decoupling ...
Ernesto Contreras
doaj   +1 more source

Image compression with anisotropic diffusion [PDF]

open access: yes, 2008
Compression is an important field of digital image processing where well-engineered methods with high performance exist. Partial differential equations (PDEs), however, have not much been explored in this context so far. In our paper we introduce a novel
Welk, Martin   +18 more
core   +1 more source

Compact anisotropic models in general relativity by gravitational decoupling

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
Durgapal’s fifth isotropic solution describing spherically symmetric and static matter distribution is extended to an anisotropic scenario. To do so we employ the gravitational decoupling through the minimal geometric deformation scheme.
E. Morales, Francisco Tello-Ortiz
doaj   +1 more source

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