scholarly journals Ghost solutions with centered schemes for one-dimensional transport equations with Neumann boundary conditions

2020 ◽  
Vol 29 (4) ◽  
pp. 927-950
Author(s):  
Mélanie Inglard ◽  
Frédéric Lagoutière ◽  
Hans Henrik Rugh
Keyword(s):  
Boundary Conditions ◽  
Neumann Boundary ◽  
Transport Equations ◽  
Neumann Boundary Conditions ◽  
One Dimensional

scholarly journals Order parameter profiles in a system with Neumann – Neumann boundary conditions

2018 ◽  
Vol 145 ◽  
pp. 01009 ◽  
Author(s):  
Vassil M. Vassilev ◽  
Daniel M. Dantchev ◽  
Peter A. Djondjorov
Keyword(s):  
Boundary Conditions ◽  
Order Parameter ◽  
Neumann Boundary ◽  
Elliptic Functions ◽  
Thermodynamic System ◽  
Neumann Boundary Conditions ◽  
Ginzburg Landau ◽  
One Dimensional ◽  
The One ◽  
Field Plane

In this article we consider a critical thermodynamic system with the shape of a thin film confined between two parallel planes. It is assumed that the state of the system at a given temperature and external ordering field is described by order-parameter profiles, which minimize the one-dimensional counterpart of the standard ϕ4 Ginzburg–Landau Hamiltonian and meet the so-called Neumann – Neumann boundary conditions. We give analytic representation of the extremals of this variational problem in terms ofWeierstrass elliptic functions. Then, depending on the temperature and ordering field we determine the minimizers and obtain the phase diagram in the temperature-field plane.

scholarly journals On the spectrum of one dimensional p-Laplacian for an eigenvalue problem with Neumann boundary conditions

2013 ◽  
Vol 33 (1) ◽  
pp. 9
Author(s):  
Ahmed Dakkak ◽  
Siham El Habib ◽  
Najib Tsouli
Keyword(s):  
Eigenvalue Problem ◽  
Boundary Conditions ◽  
Neumann Boundary ◽  
Neumann Boundary Conditions ◽  
Laplacian Operator ◽  
Strict Monotonicity ◽  
Indefinite Weight ◽  
One Dimensional ◽  
Weight One

This work deals with an indefinite weight one dimensional eigenvalue problem of the p-Laplacian operator subject to Neumann boundary conditions. We are interested in some properties of the spectrum like simplicity, monotonicity and strict monotonicity with respect to the weight. We also aim the study of zeros points of eigenfunctions.

The eigenvalue gap for one-dimensional Schrödinger operators with symmetric potentials

2009 ◽  
Vol 139 (2) ◽  
pp. 359-366 ◽  
Author(s):  
Min-Jei Huang ◽  
Tzong-Mo Tsai
Keyword(s):  
Boundary Conditions ◽  
Schrödinger Operators ◽  
Neumann Boundary ◽  
Neumann Boundary Conditions ◽  
Schrodinger Operators ◽  
One Dimensional ◽  
Eigenvalue Gap

We consider the eigenvalue gap for Schrödinger operators on an interval with Dirichlet or Neumann boundary conditions. For a class of symmetric potentials, we prove that the gap between the two lowest eigenvalues is maximized when the potential is constant. We also give some related results for doubly symmetric potentials.

scholarly journals A Collocation Method for Numerical Solution of Hyperbolic Telegraph Equation with Neumann Boundary Conditions

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
R. C. Mittal ◽  
Rachna Bhatia
Keyword(s):  
Boundary Conditions ◽  
Numerical Experiments ◽  
Neumann Boundary ◽  
Telegraph Equation ◽  
Neumann Boundary Conditions ◽  
Basis Functions ◽  
One Dimensional ◽  
First Order ◽  
Spline Basis ◽  
Good Agreement

We present a technique based on collocation of cubic B-spline basis functions to solve second order one-dimensional hyperbolic telegraph equation with Neumann boundary conditions. The use of cubic B-spline basis functions for spatial variable and its derivatives reduces the problem into system of first order ordinary differential equations. The resulting system subsequently has been solved by SSP-RK54 scheme. The accuracy of the proposed approach has been confirmed with numerical experiments, which shows that the results obtained are acceptable and in good agreement with the exact solution.

scholarly journals On the weakly degenerate Allen-Cahn equation

2019 ◽  
Vol 9 (1) ◽  
pp. 361-371 ◽  
Author(s):  
Maicon Sônego
Keyword(s):  
Boundary Conditions ◽  
Neumann Boundary ◽  
Neumann Boundary Conditions ◽  
Diffusivity Coefficient ◽  
Space Domain ◽  
One Dimensional ◽  
Cahn Equation ◽  
Constant Solution

Abstract In this paper we consider a one-dimensional Allen-Cahn equation with degeneracy in the interior of the domain and Neumann boundary conditions. We allow the diffusivity coefficient vanish at some point of the space domain and we are addressed on the existence of stable non-constant solution.

scholarly journals Analytical Solution of Homogeneous One-Dimensional Heat Equation with Neumann Boundary Conditions

2020 ◽  
Vol 1551 ◽  
pp. 012002
Author(s):  
Norazlina Subani ◽  
Faizzuddin Jamaluddin ◽  
Muhammad Arif Hannan Mohamed ◽  
Ahmad Danial Hidayatullah Badrolhisam
Keyword(s):  
Analytical Solution ◽  
Boundary Conditions ◽  
Heat Equation ◽  
Neumann Boundary ◽  
Neumann Boundary Conditions ◽  
One Dimensional
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