Results 81 to 90 of about 1,483,225 (280)

Navier–Stokes Equation in a Cone with Cross-Sections in the Form of 3D Spheres, Depending on Time, and the Corresponding Basis

open access: yesMathematics
The work establishes the unique solvability of a boundary value problem for a 3D linearized system of Navier–Stokes equations in a degenerate domain represented by a cone.
Muvasharkhan Jenaliyev   +2 more
doaj   +1 more source

On transparent boundary conditions for the high--order heat equation

open access: yes, 2013
In this paper we develop an artificial initial boundary value problem for the high-order heat equation in a bounded domain $\Omega$. It is found an unique classical solution of this problem in an explicit form and shown that the solution of the ...
Suragan, Durvudkhan   +1 more
core  

An initial-boundary value problem for an inhomogeneous system of Maxwell’s equations in the case of a ferromagnetic conducting body with anisotropy and internal defects

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2023
Background. The initial-boundary value problems for the system of Maxwell’s equations are needed in the context of describing and calculating a non-stationary electromagnetic field (non-harmonic time dependent field).
Sergey V. Marvin
doaj   +1 more source

Existence and non-uniqueness of similarity solutions of a boundary layer problem [PDF]

open access: yes
A Blasius boundary value problem with inhomogeneous lower boundary conditions f(0) = 0 and f'(0) = - lambda with lambda strictly positive was considered. The Crocco variable formulation of this problem has a key term which changes sign in the interval of
Hussaini, M. Y., Lakin, W. D.
core   +1 more source

Initial-Boundary Value Problem for Fractional Partial Differential Equations of Higher Order

open access: yesAbstract and Applied Analysis, 2012
The initial-boundary value problem for partial differential equations of higher-order involving the Caputo fractional derivative is studied. Theorems on existence and uniqueness of a solution and its continuous dependence on the initial data and on the ...
Djumaklych Amanov, Allaberen Ashyralyev
doaj   +1 more source

Calculation of free fall trajectories based on numerical optimization techniques [PDF]

open access: yes
The development of a means of computing free-fall (nonthrusting) trajectories from one specified point in the solar system to another specified point in the solar system in a given amount of time was studied.

core   +1 more source

Global existence of solutions for a class of thermoelastic plate systems

open access: yesBoundary Value Problems, 2018
This paper is concerned with the initial-boundary value problem for a class of thermoelastic plate systems. Under some appropriate assumptions, the global existence of solutions is obtained.
Yang Liu
doaj   +1 more source

The Numerical Solution of an Inverse Pseudoparabolic Problem with a Boundary Integral Observation

open access: yesMathematics
Direct and inverse problems for a pseudoparabolic equation are considered. The direct (forward) problem is to find the solution of the corresponding initial–boundary-value problem for known model parameters, as well as the initial and boundary conditions.
Miglena N. Koleva, Lubin G. Vulkov
doaj   +1 more source

Mixed Chebyshev and Legendre polynomials differentiation matrices for solving initial-boundary value problems

open access: gold, 2023
Dina Abdelhamid   +5 more
openalex   +1 more source

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