in this paper, a three-dimensional finite element model has been developed to simulate the laser-tig hybrid welding (hlaw) of stainless steel 1.4418 with thickness of 4 mm. transient temperature profile and dimensions of the fusion zone and heat affected zone (haz) during welding process are calculatedusing finite element method (fem) and were solved in the abaqus/standard software.the heat sou...

In this paper, we analyze, from the numerical point of view, a swelling porous thermo-elastic problem. The so-called second-sound effect is introduced and modeled by using simplest Maxwell–Cattaneo law. This problem leads to coupled system which written displacements fluid solid, temperature heat flux. analysis performed applying classical finite element method with linear elements for spatial ...

This paper investigates the effect of chemical reactions on flow magnetized Maxwell fluid generated by an unsteady stretching surface. The thermal transport phenomenon is analyzed using Cattaneo-Christov theory. By applying appropriate similarity transformations, governing equations motion turn into a set nonlinear differential equations. For velocity, temperature, and concentration fields, res...

A hyperbolic heat conduction (HHC) equation has been proposed to replace Fourier heat conduction equation in cases heat transfer takes place in a very short period of time or at extremely low temperature. There is a growing interest in the investigation of HHC problem in recent years, but to the author’s knowledge, HHC in composite media in multidimension has not been studied up to date. This p...

The connection between the Maxwell-Cattaneo heat transport equation and a nonequilibrium entropy is examined through four different thermodynamic approaches, and it is shown that all of them lead to the same form of the nonequilibrium entropy. Furthermore, it is seen that this form is also consistent with three microscopic formalisms. This robustness underlines the consistency and relevance of ...

Our aim in this paper is to study generalizations of the nonconserved and conserved Caginalp phase-field systems based on the Maxwell-Cattaneo law with two temperatures for heat conduction. In particular, we obtain well-posedness results and study the dissipativity of the associated solution operators.

We study the first-order formalism of pure four-dimensional SU(2) Yang–Mills theory with theta-term. We describe the Green functions associated to electric and magnetic flux operators à la ’t Hooft by means of gauge-invariant non-local operators. These Green functions are related to Witten’s invariants of four-manifolds. E-mail: [email protected] 2 E-mail: [email protected] E-mail:...