A model of the thermal dissociation process has been developed for the numerical simulation of ceramic powder processing in a d. c. plasma reactor. The temperature histories of zircon grains were calculated based on t...A model of the thermal dissociation process has been developed for the numerical simulation of ceramic powder processing in a d. c. plasma reactor. The temperature histories of zircon grains were calculated based on this model. Comparisons were carried out to determine the effects of plasma gas (N_2 and Ar), free stream temperature (6000-15000K) and Reynolds number (0.0-1.0) as well as particle diameter (20-200μm) on the zircon dissociation process. The influences of proper Nusselt number correlation and variable transport properties were discussed in detail.展开更多
文摘A model of the thermal dissociation process has been developed for the numerical simulation of ceramic powder processing in a d. c. plasma reactor. The temperature histories of zircon grains were calculated based on this model. Comparisons were carried out to determine the effects of plasma gas (N_2 and Ar), free stream temperature (6000-15000K) and Reynolds number (0.0-1.0) as well as particle diameter (20-200μm) on the zircon dissociation process. The influences of proper Nusselt number correlation and variable transport properties were discussed in detail.
