Simulation of Heat-Transfer Phenomena in a Rotary Kiln

Heat transfer in indirect heated rotary drums filled with monodisperse spheres: Comparison of experiments with DEM simulations

“…Fundamental investigations of the heat transfer within packed and stirred beds were performed [3,27], early simulations were carried out [4,26] and analytical models of the material movement were developed [5][6][7] and extended to macroscopic engineering descriptions of the heat transfer in rotary kilns [8]. The major drawback of approaches approximating the bulk material as a continuum is the assumption of continuous temperature distributions within the material.…”

Thermochemical Processes for Hydrogen Production by Water Decomposition - Progress Report, December 31, 1976 - December 31, 1977

“…The general agreement between the computed values and the estimates based on TGA kinetics leads ·to a measure of confidence in all the heat transfer estimates that were incorporated in the model. This is of special significance in view of prior difficulties in the simulation of rotary reactor performance (19,20) that arose from the difficulty in quantitatively handling heat quantities.…”

A Steady State Model of a Rotary Kiln Incinerator

“…Besides the extensive applications, the detailed understanding of a rotary kiln process, however, is far from satisfaction [4,5].Since the comprehensive operational data cannot normally be obtained from production kilns [6], mathematical models had been developed, e.g., for the cement kiln [7,8], for the production of aluminium oxides [9] or titanium dioxides [10], and for reduction of iron ore [11], and are utilized for design or operational purposes. Detailed studies of various heat transfer paths are also conducted [4,6,9,[12][13][14][15][16][17][18][19][20].…”

“…In most rotary kiln models, the thermal radiation contribution is either totally ignored [5,6,17,23], or only the thermal radiation between the enclosed surface at the same axial position is considered and neglecting the contribution from other surfaces [3,[7][8][9][10]12,13,16,18]. That is, a surface can only "see" other enclosed surfaces just above (or below) it.…”