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Recently it was obtained in [Tarzia, Thermal Sci. 21A (2017) 1-11] for the classical two-phase Lam\'e-Clapeyron-Stefan problem an equivalence between the temperature and convective boundary conditions at the fixed face under a certain…

数学物理 · 物理学 2018-10-17 Julieta Bollati , Domingo A. Tarzia

A generalized Neumann solution for the two-phase fractional Lam\'e--Clapeyron--Stefan problem for a semi--infinite material with constant initial temperature and a particular heat flux condition at the fixed face is obtained, when a…

偏微分方程分析 · 数学 2018-05-24 Sabrina Roscani , Domingo Tarzia

An explicit solution of a similarity type is obtained for a one-phase Stefan problem in a semi-infinite material using Kummer functions. Motivated by [D.A. Tarzia, Relationship between Neumann solutions for two phase Lam\'e-Clapeyron-Stefan…

偏微分方程分析 · 数学 2016-10-31 Julieta Bollati , Domingo Alberto Tarzia

We complete the Solomon-Wilson-Alexiades's mushy zone model (Letters Heat Mass Transfer, 9 (1982), 319-324) for the one-phase Lam\'e-Clapeyron-Stefan problem. We obtain explicit solutions when a convective or heat flux boundary condition is…

偏微分方程分析 · 数学 2015-03-11 Domingo Alberto Tarzia

Similarity solutions for a one-dimensional mathematical model for thawing in a saturated semi-infinite porous media is considered when change of phase induces a density jump and a convective boundary condition is imposed at the fixed face…

偏微分方程分析 · 数学 2014-05-22 Andrea N. Ceretani , Domingo A. Tarzia

Different one-phase Stefan problems for a semi-infinite slab are considered, involving a moving phase change material as well as temperature dependent thermal coefficients. Existence of at least one similarity solution is proved imposing a…

偏微分方程分析 · 数学 2021-05-12 Julieta Bollati , Adriana C. Briozzo

This study investigates the melting process of a three-phase Stefan problem in a semi-infinite material, imposing a convective boundary condition at the fixed face. By employing a similarity-type transformation, the problem is reduced to a…

偏微分方程分析 · 数学 2025-02-11 Julieta Bollati , María Fernanda Natale , José Abel Semitiel , Domingo Alberto Tarzia

A two-phase solidification process for a one-dimensional semi-infinite material is considered. It is assumed that it is ensued from a constant bulk temperature present in the vicinity of the fixed boundary, which it is modelled through a…

偏微分方程分析 · 数学 2016-09-16 Andrea N. Ceretani , Domingo A. Tarzia

In this paper, a one-phase Stefan-type problem for a semi-infinite material which has as its main feature a variable latent heat that depends on the power of the position and the velocity of the moving boundary is studied. Exact solutions…

偏微分方程分析 · 数学 2018-10-24 Julieta Bollati , Domingo A. Tarzia

We obtain a generalized Neumann solution for the two-phase fractional Lam\'{e}-Clapeyron-Stefan problem for a semi-infinite material with constant boundary and initial conditions. In this problem, the two governing equations and a governing…

偏微分方程分析 · 数学 2014-05-26 Sabrina D. Roscani , Domingo A. Tarzia

We obtain explicit expressions for one unknown thermal coefficient (among the conductivity, mass density, specific heat and latent heat of fusion) of a semi-infinite material through the one-phase fractional Lam\'e-Clapeyron-Stefan problem…

偏微分方程分析 · 数学 2015-09-15 Domingo Alberto Tarzia

In this chapter we consider different approximations for the one-dimensional one-phase Stefan problem corresponding to the fusion process of a semi-infinite material with a temperature boundary condition at the fixed face and non-linear…

统计力学 · 物理学 2019-06-21 Julieta Bollati , María F. Natale , José A. Semitiel , Domingo A. Tarzia

We consider a one-dimensional free boundary problem governed by a nonlinear diffusion - convection equation with a Neumann condition at fixed face $x=0$, which is variable in time and a like Stefan convective condition on the free boundary.…

偏微分方程分析 · 数学 2024-10-07 Adriana C. Briozzo

A one-phase Stefan problem for a semi-infinite material is investigated for special functional forms of the thermal conductivity and specific heat depending on the temperature of the phase-change material. Using the similarity…

偏微分方程分析 · 数学 2022-01-13 Julieta Bollati , María F. Natale , José A. Semitiel , Domingo A. Tarzia

In this paper we consider a one-dimensional one-phase Stefan problem corresponding to the solidification process of a semi-infinite material with a convective boundary condition at the fixed face. The exact solution of this problem,…

偏微分方程分析 · 数学 2018-08-09 Julieta Bollati , José A. Semitiel , Domingo A. Tarzia

One dimensional Stefan problems for a semi-infinite material with temperature dependent thermal coefficients are considered. Existence and uniqueness of solution are obtained imposing a Dirichlet or a Robin type condition at fixed face…

偏微分方程分析 · 数学 2019-08-29 Julieta Bollati , María Fernanda Natale , José Abel Semitiel , Domingo Alberto Tarzia

Similarity solutions for the two-phase Rubinstein binary-alloy solidification problem in a semi-infinite material are developed. These new explicit solutions are obtained by considering two cases: a heat flux or a convective boundary…

偏微分方程分析 · 数学 2022-07-26 Lucas D. Venturato , Mariela B. Cirelli , Domingo A. Tarzia

A fractional Stefan problem with a boundary convective condition is solved, where the fractional derivative of order $ \alpha \in (0,1) $ is taken in the Caputo sense. Then an equivalence with other two fractional Stefan problems (the first…

偏微分方程分析 · 数学 2014-03-26 Sabrina Roscani , Eduardo Santillan Marcus

We study self-similar solutions of a multi-phase Stefan problem for a heat equation on the half-line $x>0$ with a constant initial data and with Dirichlet or Neumann boundary conditions. In the case of Dirichlet boundary condition we prove…

偏微分方程分析 · 数学 2024-05-22 E. Yu. Panov

In this paper we consider two different Stefan problems for a semi-infinite material for the non classical heat equation with a source which depends on the heat flux at the fixed face x = 0. One of them (with constant temperature on x = 0)…

经典物理 · 物理学 2018-10-17 Julieta Bollati , Maria F. Natale , Jose A. Semitiel , Domingo A. Tarzia
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