Modelling of Heat Flow in Bundles of Round Steel Bars Including the Formation of Scale Layer

Agnieszka Benduch; Rafał Wyczółkowski; Jan Jowsa

doi:10.4028/www.scientific.net/SSP.223.89

Paper Titles

Synthesis and Thermal Characterization of Dysprosium Zirconate
p.54

The Use of Topology Optimization in Shaping the Strength of Castings
p.62

The Research on the Ablation Casting Technology for Aluminium Alloys
p.70

Mechanical Properties of AlSi9Mg Alloy with a Sodium Modifier
p.78

Modelling of Heat Flow in Bundles of Round Steel Bars Including the Formation of Scale Layer
p.89

Investigations on the Thermo-Mechanical Properties of CrN/CrCN Gradient Coatings Using a Thermo-Dilatometric Method
p.100

Corrosion Resistant Layers Produced in Vacuum Titanizing Process on a Low Carbon Steel Surface Coated Electrolytically with Cobalt
p.110

Diffusion Carbide Layers Produced on Tool Steel in Chromium Chloride Atmosphere at Low Pressure
p.119

The Influence of Thickness of Layers in the Multilayer Coating of the PN + AlCrTiN_multinano Hybrid Layer on Tribological Properties
p.127

HomeSolid State PhenomenaSolid State Phenomena Vol. 223Modelling of Heat Flow in Bundles of Round Steel...

Modelling of Heat Flow in Bundles of Round Steel Bars Including the Formation of Scale Layer

Abstract:

The article presents a proposal of a mathematical model describing the complex heat flow within the area of steel bar bundles. The model is based on an analysis of the thermal resistances defined for mechanisms of heat transfer present in the discussed medium. A bundle is considered a porous medium with a granular structure. Taking into account the modes of heat flow, we consider the following: thermal conduction in a solid phase (steel and scale), thermal conduction in a liquid phase (gas), and thermal radiation and the contact conduction in the areas of bar contact. The essence of the discussed model is the consideration of the phenomenon of scale, which is formed on the surface of the heated bars. The final result of the described calculation procedure is the value of the effective thermal conductivity k_ef. This parameter quantitatively expresses the heat flow in the area of the bars bundle and constitutes its basic thermal property. The value of k_ef is necessary for the optimization of heating a bundle of bars.