Results 21 to 30 of about 257,535 (310)

Convergence of the ‘relativistic’ heat equation to the heat equation as $c\to\infty$ [PDF]

open access: yesPublicacions Matemàtiques, 2007
We prove that the entropy solutions of the so-called relativistic heat equation converge to solutions of the heat equation as the speed of light $L ^1(\mathbb{R}^N)\cap L^\infty(\mathbb{R}^N) $u _0 \geq 0.
openaire   +2 more sources

On one problem for restoring the density of sources of the fractional heat conductivity process with respect to initial and final temperatures

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2018
In this paper we consider inverse problems for a fractional heat equation, where the fractional time derivative is taken into account in Riemann-Liouville sense.
A.S. Erdogan   +3 more
doaj   +1 more source

Thermal quadrupole method with internal heat sources [PDF]

open access: yes, 2012
A new method based on the thermal quadrupoles technique for heat transfer modelling in multilayered slabs with heat sources is proposed. Classical thermal quadrupoles use hyperbolic functions and numerical problems occur according to the argument value ...
A. Kusiak   +21 more
core   +1 more source

Time-decoupled high order continuous space-time finite element schemes for the heat equation [PDF]

open access: yes, 2014
Copyright © by SIAMIn Comput. Methods Appl. Mech. Engrg., 190 (2001), pp. 6685—6708 Werder et al. demonstrated that time discretizations of the heat equation by a temporally discontinuous Galerkin finite element method could be decoupled by diagonalising
Kruse, C, Shaw, S
core   +1 more source

On the projection method for solving the heat equation with lumped heat capacity [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
This paper presents some results of the possibility of using the least squares projection method for solving heat equations with concentrated heat capacity on a half-line.
Seregina, Elena V.   +1 more
doaj   +1 more source

On a time-optimal control problem for a heat conduction equation with involution [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
In this paper, we consider a boundary control problem for a heat conduction equation with involution in a bounded one-dimensional domain. The solution with the control function on the border of the rod is given.
Dekhkonov, Farrukh N.
doaj   +1 more source

Null controllability of heat equation with switching controls under Robin's boundary condition [PDF]

open access: yes, 2016
In this paper, we consider the null controllability of 1-d heat equation endowed with Robin's boundary conditions, when the operator - d(2)/dx(2) has positive eigenvalues and try to find sufficient conditions for building switching controls.
Hamidoglu, Ali
core   +1 more source

Large Time Behavior of Solutions to the Nonlinear Heat Equation with Absorption with Highly Singular Antisymmetric Initial Values

open access: yesAdvanced Nonlinear Studies, 2020
In this paper, we study global well-posedness and long-time asymptotic behavior of solutions to the nonlinear heat equation with absorption, ut-Δ⁢u+|u|α⁢u=0{u_{t}-\Delta u+\lvert u\rvert^{\alpha}u=0}, where u=u⁢(t,x)∈ℝ{u=u(t,x)\in\mathbb{R}}, (t,x)∈(0,∞)×
Mouajria Hattab   +2 more
doaj   +1 more source

Time analyticity of the biharmonic heat equation, the heat equation with potentials and some nonlinear heat equations

open access: yesCommunications on Pure & Applied Analysis, 2022
<p style='text-indent:20px;'>In this paper, we investigate the pointwise time analyticity of three differential equations. They are the biharmonic heat equation, the heat equation with potentials and some nonlinear heat equations with power nonlinearity of order <inline-formula><tex-math id="M1">\begin{document}$ p $\end{document}</
openaire   +3 more sources

Global and local existence of solution for fractional heat equation in R N by Balakrishnan definition [PDF]

open access: yesMathematica Moravica, 2022
Our aim here is to collect and to compare two definitions of the fractional powers of non-negative operators that can be found in the literature; we will present the proof of an equivalence and compare properties of that notions in different approaches ...
Ferreira Jorge   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy