Diffusion mechanism of energy flow in multi-heat-source synthesis of SiC

Abstract

Through the experiments and the numerical simulation of temperature field in multi-heat-source synthesis SiC furnace, in order to research the feature point in multi-heat-source synthesis furnace, the variation law of heat flux was studied and the multi-directional energy flow diffusion mechanism was revealed. The results show that, due to the shielding action between the heat-source and the superposition effect of thermal fields, the insulating effect is best in multi-heat-source synthesis furnace. The heat emission effect is good outside the common area between heat-sources, but the heat storage is poor. Compared with the synthesis furnace that heat source is parallelly arranged, the furnace of stereoscopic arrangement has a more obvious heat stacking effect and better heat preservation effect, but the air permeability of heat source connecting regions is worse. In the case with the same ingredients, the resistance to thermal diffusion and mass diffusion is higher in heat source connecting regions.

Keywords

multi-heat-source synthesis SiC / temperature field / energy diffusion mechanism / heat flux

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