Simulation of a Round Steel Charge Heating by a Pulsatory Disturbed Flue Gas Stream Using the Fluent Software

The paper presents a numerical modelling of a round steel charge heating by a pulsatory disturbed flue gas stream. The problem, which was decided to be modelled using modern tools for numerical solutions, is the performance of calculations of the surface temperature distribution on a cross-section of a tube 64 mm in outside diameter and with the wall 10 mm thick. Boundary conditions calculated on the basis of data obtained from experimental studies were used for computational purposes. The geometrical shape caused that at different points on the cylinder circumference the heat exchange was proceeding at various intensities, which resulted in a diversified temperature distribution on the cross-section. The knowledge of the impact of the introduced pulsatory disturbances and of the location of boundary-layer separation point in a significant way can shorten the process of low-temperature heating and by appropriate scheme of the round charge rotation can ensure a uniform distribution of the temperature field on its circumference.