Results 21 to 30 of about 394,180 (145)

Enforcing the non-negativity constraint and maximum principles for diffusion with decay on general computational grids [PDF]

, 2010
In this paper, we consider anisotropic diffusion with decay, and the diffusivity coefficient to be a second-order symmetric and positive definite tensor.
Arnold, Barber, Boyd, Braess, Brezzi, Brezzi, Brezzi, Brezzi, Brezzi, Brezzi, Burman, Chadwick, Christie, Ciarlet, Ciarlet, Droniou, Eigestad, Fraenkel, Gilbarg, Herrera, Hughes, Hughes, Hyman, Höhn, Karnadakis, Karátson, Karátson, Keilegavlen, Korotov, Kuzmin, Kuznetsov, Ladyzhenskaya, Le Potier, Lipnikov, Lipnikov, Lipnikov, Liska, Luenberger, Masud, McOwen, Mlacnik, Morton, Nakshatrala, Nakshatrala, Nedelec, Nedelec, Nocedal, Nordbotten, Patankar, Protter, Pucci, Quarteroni, Raviart, Saad, Shashkov, Shewchuk, Strikwerda, Tikhonov, Trudinger, Vanselow, Varga, Varga, Vejchodsky, Yanik, Yanik, Yuan   +65 more
core   +1 more source

An Integral Equation Method for the Cahn-Hilliard Equation in the Wetting Problem

, 2020
We present an integral equation approach to solving the Cahn-Hilliard equation equipped with boundary conditions that model solid surfaces with prescribed Young's angles. The discretization of the system in time using convex splitting leads to a modified
Jiang, Shidong, Kloeckner, Andreas, Wang, Xiao-Ping, Wei, Xiaoyu   +3 more
core   +1 more source

On the convergence of adaptive nonconforming finite element methods for a class of convex variational problems [PDF]

, 2011
We formulate and analyze an adaptive nonconforming finite element method for the solution of convex variational problems. The class of minimization problems we admit includes highly singular problems for which no Euler–Lagrange equation (or inequality ...
Ortner, Christoph, Praetorius, Dirk
core   +2 more sources

Hot Deformation and Dynamic Recrystallization Behavior of CoCrNi and (CoCrNi)₉₄Ti₃Al₃ Medium Entropy Alloys

Metals, 2020
The CoCrNi and precipitate-hardened (CoCrNi)94Ti3Al3 medium entropy alloys (MEAs) have attracted much attention, due to their exceptional mechanical properties, whereas the hot deformation characteristics have not been revealed.
Hai-long Yi, Daixiu Wei, Yingchen Wang, Liqiang Wang, Ming-yang Fang, Kang Yang, Hidemi Kato   +6 more
doaj   +1 more source

CONDITION EQUATION OF POLYMER FILAMENTS [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2020
Subject of Research. Studies of thermal and mechanical properties of polymer filaments and fibers are carried out. Refinements are made to the previously obtained constitutive equation that describes deformation-relaxation processes in polymer materials.
Victoria V. Golovina, Ekaterina A. Shakhova, Pavel P. Rymkevich   +2 more
doaj   +1 more source

Development and refinement of the Variational Method based on Polynomial Solutions of Schrödinger Equation

Open Engineering, 2020
The variational method is known as a powerful and preferred technique to find both analytical and numerical solutions for numerous forms of anharmonic oscillator potentials.
Maiz Fethi
doaj   +1 more source

An Extension of the Product Integration Method to L1 with Applications in Astrophysics

Mathematical Modelling and Analysis, 2016
A Fredholm integral equation of the second kind in L1([a, b], C) with a weakly singular kernel is considered. Sufficient conditions are given for the existence and uniqueness of the solution. We adapt the product integration method proposed in C0 ([a, b],
Laurence Grammont, Mario Ahues, Hanane Kaboul   +2 more
doaj   +1 more source

Optimization of the prediction of second refined wavelet coefficients in electron structure calculations

Open Physics, 2016
In wavelet-based solution of eigenvalue-type differential equations, like the Schrödinger equation, refinement in the resolution of the solution is a costly task, as the number of the potential coefficients in the wavelet expansion of the solution ...
Sziová Brigita, Nagy Szilvia, Pipek János   +2 more
doaj   +1 more source

An efficient cylindrical coordinate subgrid parabolic equation model for predicting the power distribution and coverage of radar signals in a complex multi‐scale marine environment

Electronics Letters, 2021
An efficient cylindrical coordinate subgrid parabolic equation model is proposed to predict the power distribution and coverage of radar signals in a complex multi‐scale marine environment.
Xiaochuan Deng, C. Liao, Dongmin Zhang, Feng Ju, Yuping Shang, Haijing Zhou   +5 more
doaj   +1 more source

Adaptive computation of gravitational waves from black hole interactions [PDF]

, 1998
We construct a class of linear partial differential equations describing general perturbations of non-rotating black holes in 3D Cartesian coordinates.
A. Abrahams, A. Abrahams, A. M. Abrahams, B. Schmidt, E. Seidel, Edward Seidel, G. B. Cook, J. Baker, J. Massó, K. Camarda, L. Rezzolla, Lee Wild, M. Berger, M. Berger, M. Choptuik, M. Choptuik, P. Anninos, P. Anninos, P. Anninos, P. Hübner, P. Papadopoulos, Philippos Papadopoulos, R. Gomez, R. Gomez, R. H. Price, R. Hamade, R. J. Gleiser, R. Price, S. Brandt, S. Chandrasekhar, T. Regge, W. Krivan, W. Krivan, É. É. Flanagan, É. É. Flanagan   +34 more
core   +2 more sources