Simulating Heat Transfer Phenomena with Comsol Multiphysics

Artificial Intelligence for Engineering, Design, Analysis and Manufacturing, 1993

Heat and Mass Transfer, 2003

1992

This paper describes a framework and a system for generating mathematical models (i.e. sets of equa- tions) for analyzing physical systems. The models are derived from physical principles, and include not only models based on algebraic and ordinary differential equations (i.e. "lumped" models), but also those based on partial differential equations (i.e. "distributed" models). We are motivated the need for

2013

In this paper, two different forms of the non-linear PDE-system for heat and mass transfer in porous materials and their implementation with COMSOL Multiphysics are considered. The φ-based form presents the relative humidity as system variable and leads in general to nonconservative solutions. The u-based form uses the water content as variable and is conservative. This study aims to select the most appropriated form for the implementation of the heat and mass transfer problem in COMSOL Multiphysics, comparing the quality of the numerical solutions and the solver performances. As first test-example, the simulation of a onedimensional porous layer with a moisture flux imposed on one of the boundaries is presented.As second example, the moisture redistribution inside a partially saturated layer is simulated.

IntechOpen eBooks, 2023

The purpose of this work consists in determining the three-dimensional distribution of the non-stationary temperature field in a steel half-finished material, S235 JRG2 (OL 37-2k) mark, heated in an experimental flame oven, by building a numerical model with finite differences in the C++ programming software. The results obtained will be compared to the ones determined through experimental measurements.