Results 21 to 30 of about 3,000,291 (292)

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

Lack of controllability of the heat equation with memory [PDF]

open access: yes, 2012
We consider a model for the heat equation with memory, which has infinite propagation speed, like the standard heat equation. We prove that, in spite of this, for every T > 0 there exist square integrable initial data which cannot be steered to hit zero ...
Andrei Halanay, Pandolfi, Luciano
core   +1 more source

MULTI-TERM TIME-FRACTIONAL DERIVATIVE HEAT EQUATION FOR ONE-DIMENSIONAL DUNKL OPERATOR

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2022
In this paper, we investigate the well-posedness for Cauchy problem for multi-term time-fractional heat equation associated with Dunkl operator. The equation under consideration includes a linear combination of Caputo derivatives in time with decreasing ...
D. Serikbaev
doaj   +1 more source

Experimental determination of natural convection heat transfer coefficients in an attic shaped enclosure [PDF]

open access: yes, 2010
Heat transfer by natural convection in triangular enclosures is an area of significant importance in applications such as the design of greenhouses, attics and solar water heaters.
Carson, James K.   +5 more
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

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-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

Heat Equation

open access: yes, 2022
The Heat Equation is a partial differential equation that describes the distribution of heat over a period of time. The heat equation is important in many fields of Mathematics.
Xu, Ethan
core   +1 more source

Refrigerant forced-convection condensation inside horizontal tubes [PDF]

open access: yes, 1968
High vapor velocity condensation inside a tube was studied theoretically. The heat transfer coefficients were calculated by the momentum and heat transfer analogy.
Bae, S.   +8 more
core   +1 more source

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