## Abstract The algorithm in a earlier paper by Comini __et al__^1^ for handling the phase change in transient nonβlinear heat conduction problems is simplified and improved. Two examples involving phase change are solved using quadratic isoparametric elements and it is demonstrated that very good
A phase-change problem for an extended heat conduction model
β Scribed by B. D'Acunto; M. De Angelis
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 597 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0895-7177
No coin nor oath required. For personal study only.
β¦ Synopsis
The aim of this paper is the analysis of a free boundary value related to a generalized heat conduction model. The qualitative analysis proposed in this paper is developed also in view of the applications of suitable computational schemes to obtain quantitative results. A basic role is played by the fundamental solution of a third-order operator, explicitly determined in a previous paper. We first discuss a method to obtain the solutions to a moving boundary value problem for a third-order operator.
Next, by using the properties of the function K, the free boundary value problem is reduced to a Volterra nonlinear system for which an existence and uniqueness result is given.
π SIMILAR VOLUMES
This work proposes a temperature-based ΓΏnite element model for transient heat conduction involving phasechange. Like preceding temperature-based models, it is characterized by the discontinuous spatial integration over the elements a ected by the phase-change. Using linear triangles or tetrahedrals,
A hybrid method of solution for the linear problem of heat conduction in a body is presented. The variational support is a two-ΓΏeld functional whose arguments are heat ux, which meets a priori inner thermal equilibrium, and temperature on the boundary of the body. The stationary conditions of the fu