Computational Model of Heat Conduction in the Steel Round Bar Bundle

This paper presents a computational model used for quantitative analysis of heat conduction process in a flat bed of steel round bars.For this purpose, an approach based on using the analogical mathematical description of the electricity and heat flow phenomena was applied.Furthermore, this model is semi-empirical since it uses dependencies determined based on experimental research.The basis for deriving the mathematical dependencies is the geometric model of the system studied, defined by the so-called elementary cell.Each of the mechanisms of heat conduction that occurs within the cell was assigned an appropriate thermal resistance.The total thermal resistance of a cell is a combination of parallel and serial connections of individual resistances.The calculations were made for the temperature range of 0-800 • C, for four bar diameters and two porosities.