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采用Surface Evolver 2.7及Rhinoceros 5.0软件,构建了以Weaire-Phelan模型为基本骨架的泡沫陶瓷三维几何模型,建立了离心力场下合金熔体泡沫陶瓷过滤的数学模型。采用数值模拟方法研究了离心转速、泡沫陶瓷孔径及厚度等对过滤效率、压力损失及出口熔体流速的影响。结果表明,泡沫陶瓷孔径和厚度是影响过滤效率和压力损失的主要因素;过滤效率和压力损失均随泡沫陶瓷孔径的减小而增加,随泡沫陶瓷厚度增大而增加;出口熔体流速随泡沫陶瓷孔径及离心转速的增大而增加,随泡沫陶瓷厚度的增加而减小。
Using Surface Evolver 2.7 and Rhinoceros 5.0 software, a three-dimensional geometric model of foam ceramic with Weaire-Phelan model as the basic skeleton was constructed. The mathematical model of ceramic melt foam ceramics under centrifugal force was established. The effects of centrifugal speed, foam ceramic pore size and thickness on filtration efficiency, pressure loss and outlet melt flow rate were studied by numerical simulation. The results show that the pore size and thickness of ceramic foam are the main factors that affect the filtration efficiency and pressure loss. The filtration efficiency and pressure loss increase with the decrease of foam ceramic pore size and increase with the increase of foam ceramic thickness. Ceramic aperture and centrifugal speed increases with the increase, with the foam ceramic thickness decreases.