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We study multi-phase Stefan problem with increasing Riemann initial data and with generally negative latent specific heats for the phase transitions. We propose the variational formulation of self-similar solutions, which allows to find…

偏微分方程分析 · 数学 2023-08-15 Evgeny Yu. Panov

We argue that the celebrated Stefan condition on the moving interphase, accepted in mathematical physics up to now, can not be imposed if energy sources are spatially distributed in the volume. A method based on Tikhonov and Samarskii's…

数学物理 · 物理学 2007-05-23 B. F. Kostenko , J. Pribis , I. V. Puzynin

In this paper we are interested in a rigorous derivation of the Kuramoto-Sivashinsky equation (K--S) in a Free Boundary Problem. As a paradigm, we consider a two-dimensional Stefan problem in a strip, a simplified version of a solid-liquid…

偏微分方程分析 · 数学 2009-07-17 Claude-Michel Brauner , Josephus Hulshof , Luca Lorenzi

We develop a new approach to study the well-posedness theory of the Prandtl equation in Sobolev spaces by using a direct energy method under a monotonicity condition on the tangential velocity field instead of using the Crocco…

偏微分方程分析 · 数学 2012-03-28 Radjesvarane Alexandre , Ya-Guang Wang , Chao-Jiang Xu , Tong Yang

In this paper we study the effect of stochastic perturbations on a common type of moving boundary value PDE's which endorse Stefan boundary conditions, or Stefan problems, and show the existence and uniqueness of the solutions to a number…

概率论 · 数学 2012-10-29 Zhi Zheng , Richard B. Sowers

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

We study the well-posedness theory for the MHD boundary layer. The boundary layer equations are governed by the Prandtl type equations that are derived from the incompressible MHD system with non-slip boundary condition on the velocity and…

偏微分方程分析 · 数学 2017-01-17 Cheng-Jie Liu , Feng Xie , Tong Yang

This work focuses on the mathematical analysis of the Cauchy problem associated with a two-dimensional equation describing the dynamics of a thin fluid film flowing down an inclined flat plate under the influence of gravity and an electric…

偏微分方程分析 · 数学 2025-06-23 Manuel Fernando Cortez , Oscar Jarrin , Miguel Yangari

In this paper we study the existence of traveling wave solutions for a free-boundary problem modeling the phase transition of a material where the heat is transported by both conduction and radiation. Specifically, we consider a…

偏微分方程分析 · 数学 2025-06-03 Elena Demattè , Juan J. L. Velázquez

A one-dimensional fractional one-phase Stefan problem with a temperature boundary condition at the fixed face is considered. An integral relationship between the temperature and the free boundary is obtained which is equivalent to the…

偏微分方程分析 · 数学 2018-10-25 Sabrina Roscani , Domingo Tarzia

Patch solutions for the surface quasigeostrophic (SQG) equation model sharp temperature fronts in atmospheric and oceanic flows. We establish local well-posedness for SQG sharp fronts of low Sobolev regularity, $H^{2+s}$ for arbitrarily…

偏微分方程分析 · 数学 2021-05-25 Francisco Gancedo , Huy Q. Nguyen , Neel Patel

We consider approximations of the Stefan-type condition by imbalances of volume closely around the inner interface and study convergence of the solutions of the corresponding semilinear stochastic moving boundary problems. After a…

概率论 · 数学 2018-10-29 Marvin S. Mueller

We study the two-dimensional Muskat problem in a horizontally periodic setting and for fluids with arbitrary densities and viscosities. We show that in the presence of surface tension effects the Muskat problem is a quasilinear parabolic…

偏微分方程分析 · 数学 2018-04-30 Bogdan-Vasile Matioc

We study self-similar solutions of a multi-phase Stefan problem, first in the case of one space variable, and then in the radial multidimensional case. In both these cases we prove that a nonlinear algebraic system for determination of the…

偏微分方程分析 · 数学 2024-01-30 Evgeny Yu. Panov

We investigate the general plasma-vacuum interface problems for the ideal incompressible MHD equations with or without surface tension and prove their nonlinear local well-posedness in standard Sobolev spaces under either non-zero surface…

偏微分方程分析 · 数学 2023-11-15 Sicheng Liu , Zhouping Xin

We study the regularity of the free boundary arising in a thermodynamically consistent two-phase Stefan problem with surface tension by means of a family of parameter-dependent diffeomorphisms, $L_p$-maximal regularity theory, and the…

偏微分方程分析 · 数学 2016-12-19 Jan Pruess , Yuanzhen Shao , Gieri Simonett

In this paper we consider a nonlinear Petrovsky equation in a bounded domain with a delay term and a strong dissipation \begin{align*} u_{tt} + \Delta^{2} u -\mu_1g_1( \Delta( u_t(x,t))) -\mu_2g_2( \Delta (u_t(x,t-\tau))) =0. \end{align*}…

偏微分方程分析 · 数学 2021-08-20 Ahmed Chahtou , Mama Abdelli , Akram Ben Aissa

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

We prove the global-time existence of weak solutions to the supercooled Stefan problem. Our result holds in general space dimensions and with a general class of initial data. In addition, our solution is maximal in the sense of a certain…

偏微分方程分析 · 数学 2026-04-21 Sunhi Choi , Inwon C. Kim , Young-Heon Kim

We show local well-posedness for the Mullins-Sekerka system with ninety degree angle boundary contact. We will describe the motion of the moving interface by a height function over a fixed reference surface. Using the theory of maximal…

偏微分方程分析 · 数学 2019-02-12 Helmut Abels , Maximilian Rauchecker , Mathias Wilke