Results 51 to 60 of about 1,325 (149)
Modelo semidiscreto para una ecuación de difusión no local con fuente
Revista Integración, 2012 Estudiamos el modelo semidiscreto para un problema de difusión no local con fuente (ui) ′ (t) = X N j=−N hJ h(i − j) uj(t) − X N j=−N hJ h(i − j) ui(t) + f(ui(t)), con dato inicial ui(0) = u0(xi) > 0.
Mauricio Bogoya, Alberto Forero
doaj
Numerical Identification of Boundary Conditions for Richards’ Equation
MathematicsA time stepping quasilinearization approach to the mixed (or coupled) form of one and two dimensional Richards’ equations is developed. For numerical solution of the linear ordinary differential equation (ODE) for 1D case and elliptic for 2D case ...
Miglena N. Koleva, Lubin G. Vulkov
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Regularizations of forward‐backward parabolic PDEs
GAMM-Mitteilungen, Volume 47, Issue 4, November 2024.Abstract Forward‐backward parabolic equations have been studied since the 1980s, but a mathematically rigorous picture is still far from being established. As quite a number of new papers have appeared recently, we review in this work the current state of the art.
Carina Geldhauser
wiley +1 more source
High order finite difference methods for the wave equation with non-conforming grid interfaces
, 2015 We use high order finite difference methods to solve the wave equation in the second order form. The spatial discretization is performed by finite difference operators satisfying a summation-by-parts property.
Kreiss, Gunilla +2 more
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Conservation laws of semidiscrete canonical Hamiltonian equations [PDF]
Journal of Physics A: Mathematical and General, 2001 19 pages, 2 ...
openaire +3 more sources
International Journal of Mechanical System Dynamics, Volume 4, Issue 2, Page 117-130, June 2024.Abstract Design of earth structures, such as dams, tunnels, and embankments, against the vibrational loading caused by high‐speed trains, road traffic, underground explosions, and, more importantly, earthquake motion, demands solutions of the dynamic soil–structure Interaction (SSI) problem.
Vikas Sharma +2 more
wiley +1 more source
Mathematical Methods in the Applied Sciences, Volume 47, Issue 7, Page 5999-6035, 15 May 2024.We consider the hyperbolic relaxation of the viscous Cahn–Hilliard equation with a symport term. This equation is characterized by the presence of the additional inertial term τDϕtt$$ {\tau}_D{\phi}_{tt} $$ that accounts for the relaxation of the diffusion flux.
Dieunel Dor +2 more
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Modeling and simulation of the input–output behavior of a geothermal energy storage
Mathematical Methods in the Applied Sciences, Volume 47, Issue 1, Page 371-396, 15 January 2024.This paper investigates mathematical modeling and numerical methods for simulations of the input–output behavior of a geothermal energy storage. Such simulations are needed for the optimal control and management of residential heating systems equipped with an underground thermal storage. There, a given volume under or aside of a building is filled with
Paul Honore Takam +2 more
wiley +1 more source
Delay differential equations with homogeneous integral conditions
Electronic Journal of Differential Equations, 2013 In this article we prove the existence and uniqueness of a strong solution of a delay differential equation with homogenous integral conditions using the method of semidiscretization in time.
Abdur Raheem, Dhirendra Bahuguna
doaj
International Journal of Differential Equations, 2017 In this paper, we present a block hybrid trigonometrically fitted Runge-Kutta-Nyström method (BHTRKNM), whose coefficients are functions of the frequency and the step-size for directly solving general second-order initial value problems (IVPs), including
F. F. Ngwane, S. N. Jator
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