Results 1 to 10 of about 27,830 (147)

Galilean-Invariant Characteristic-Based Volume Penalization Method for Supersonic Flows with Moving Boundaries

open access: yesFluids, 2021
This work extends the characteristic-based volume penalization method, originally developed and demonstrated for compressible subsonic viscous flows in (J. Comput. Phys.
Nurlybek Kasimov   +3 more
doaj   +1 more source

The Problem of Determining Kernels in a Two-dimensional System of Viscoelasticity Equations

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2023
For a two-dimensional system of integro-differential equations of viscoelasticity in an isotropic medium, the direct and inverse problems of determining the stress vector and particle velocity, as well as the diagonal hereditarity matrix, are studied ...
D. K. Durdiev, A. A. Boltaev
doaj   +1 more source

Optimal Control by a Cascade System of Hyperbolic and Ordinary Delayed Differential Equation

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2023
In the class of smooth control functions, an optimal control problem of firstorder semilinear hyperbolic equations is investigated. We consider the case when the functional parameter in the right side of the hyperbolic system is determined from the ...
A.V. Arguchintsev, V.P. Poplevko
doaj   +1 more source

Four-Quadrant Riemann Problem for a 2×2 System II

open access: yesMathematics, 2021
In previous work, we considered a four-quadrant Riemann problem for a 2×2 hyperbolic system in which delta shock appears at the initial discontinuity without assuming that each jump of the initial data projects exactly one plane elementary wave.
Jinah Hwang   +3 more
doaj   +1 more source

T5 configurations and hyperbolic systems

open access: yesCommunications in Contemporary Mathematics, 2023
In this paper, we study the rank-one convex hull of a differential inclusion associated to entropy solutions of a hyperbolic system of conservation laws. This was introduced in [B. Kirchheim, S. Müller and V. Šverák, Studying Nonlinear PDE by Geometry in Matrix Space (Springer, 2003), Sec.
Johansson C. J. P., Tione R.
openaire   +5 more sources

An Extended Thermodynamics Model for Blood Flow

open access: yesMathematics, 2022
A model for blood flow is introduced in the context of the Rational Extended Thermodynamics (RET). The balance equations are applied to the two-hierarchy structure recently introduced by Ruggeri and Sugiyama.
Elvira Barbera, Annamaria Pollino
doaj   +1 more source

Fractional-hyperbolic systems [PDF]

open access: yesFractional Calculus and Applied Analysis, 2013
Final version.
openaire   +3 more sources

An Optimal Control Problem by a Hyperbolic System with Boundary Delay

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2021
The paper deals with an optimal control problem by a system of semilinear hyperbolic equations with boundary differential conditions with delay. This problem is considered for smooth controls. Because this requirement it is impossible to prove optimality
A.V. Arguchintsev, V.P. Poplevko
doaj   +1 more source

Hyperbolic Dynamical Systems [PDF]

open access: yes, 2009
The theory of uniformly hyperbolic dynamical systems was initiated in the 1960's (though its roots stretch far back into the 19th century) by S. Smale, his students and collaborators, in the west, and D. Anosov, Ya. Sinai, V. Arnold, in the former Soviet Union.
Araujo, Vitor, Viana, Marcelo
openaire   +3 more sources

Performance of basic arithmetic actions with complex numbers, which are presented in interval hyperbolic form

open access: yesСучасні інформаційні системи, 2022
The goal of the work. Development of methods for performing basic arithmetic operations with interval complex numbers, which are presented in hyperbolic form, their modulus and argument. Results.
Svitlana Gadetska   +3 more
doaj   +1 more source

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