Results 21 to 30 of about 745 (246)

Significance of chemical reaction with activation energy for Riga wedge flow of tangent hyperbolic nanofluid in existence of heat source

Case Studies in Thermal Engineering, 2021
This manuscript uncovers the heat and mass transfer of an unsteady tangent hyperbolic nanofluid flow across an extensible Riga wedge under the effects of stagnation point, heat source, and activation energy.
Sohaib Abdal, Imran Siddique, Ali Saleh Alshomrani, Fahd Jarad, Irfan Saif Ud Din, Saima Afzal   +5 more
doaj   +1 more source

Numerical simulation of thermal processes occurring in materials under the action of femtosecond laser pulses

Discrete and Continuous Models and Applied Computational Science, 2021
In this work, a numerical study of the solutions of the parabolic and hyperbolic equations of heat conduction with the same physical parameters is carried out and a comparative analysis of the results obtained is carried out. The mathematical formulation
Ilkizar V. Amirkhanov, Nil R. Sarker, Ibrohim Sarkhadov   +2 more
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Flux formulation of hyperbolic heat conduction [PDF]

Journal of Applied Physics, 1985
The development of the general flux formulation for heat conduction based on the modified Fourier’s law is presented. This new formulation produces a hyperbolic vector equation in heat flux which is more convenient to use for analysis in situations involving specified flux conditions than the standard temperature formulation.
Frankel, Jay Irwin, Vick, Brian L., Ozisik, M. Necati   +2 more
openaire   +2 more sources

New operational relations for mathematical models of local nonequilibrium heat transfer

Российский технологический журнал, 2022
Objectives. Recently, interest in studying local nonequilibrium processes has increased in the context of the development of laser technologies, the possibility of reaching ultrahigh temperatures and pressures, and the need for a mathematical description
E. M. Kartashov
doaj   +1 more source

Hyperbolic heat conduction in two semi-infinite bodies in contact [PDF]

, 2005
summary:We find, under the viewpoint of the hyperbolic model of heat conduction, the exact analytical solution for the temperature distribution in all points of two semi-infinite homogeneous isotropic bodies that initially are at uniform temperatures ...
Juan Antonio López Molina, López Molina, Juan Antonio, Guillén, Macarena Trujillo, Macarena Trujuillo Guillén   +3 more
core   +1 more source

ANALYTICAL SOLUTION OF NON-FOURIER HEAT CONDUCTION PROBLEM ON A SLAB UNDER CONVECTION BOUNDARY CONDITIONS [PDF]

مجله مدل سازی در مهندسی, 2013
This paper studies an analytical method which combines the superposition technique along with the solution structure theorem such that a closed-form solution of the hyperbolic heat conduction equation can be obtained using fundamental mathematics.
محمد Akbari, سیف الله Saedodin, فرشاد Kowsari, سیف الله Saedodin, داود Toghraie semiromi   +4 more
doaj   +1 more source

New Modified Couple Stress Theory of Thermoelasticity with Hyperbolic Two Temperature

Mathematics, 2023
This paper deals with the two-dimensional deformation in fibre-reinforced composites with new modified couple stress thermoelastic theory (nMCST) due to concentrated inclined load.
Iqbal Kaur, Kulvinder Singh, Eduard-Marius Craciun   +2 more
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Thermal quadrupole method with internal heat sources [PDF]

, 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, BATTAGLIA, Jean-Luc, PRADERE, Christophe, KUSIAK, Andrzej, PAILHES, Jerome, Batsale, J.-C., AREGBA, Aworou Waste, A.W. Aregba, TOUTAIN, Jerome, Aregba, A.W., AREGBA, Waste, J.-C. Batsale, C. Pradere, Kusiak, A., TOUTAIN, Jean, J. Toutain, J. Pailhes, Toutain, J., Pailhes, J., BATSALE, Jean-Christophe, Battaglia, J.-L., J.-L. Battaglia   +21 more
core   +1 more source

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

, 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

Numerical modelling of thermal waves via internal state variable approach

Computer Assisted Methods in Engineering and Science, 2023
Numerical solutions by means of the space-time finite element method to initial-boundary value problems for a hyperbolic model of heat conduction, are obtained.
Czesław Bajer, Witold Kosiński
doaj