离心力场下铜合金熔体泡沫陶瓷过滤数值模拟  

Numerical Simulation of Ceramic Foam Filtration for Copper Alloy Melt in Centrifugal Force Field

作　　者：胡志雄[1] 殷鹏[1] 孙新民[1] 吁安山[1] 戴斌煜[1] 

机构地区：[1]南昌航空大学航空制造工程学院

出　　处：《特种铸造及有色合金》2015年第11期1196-1199,共4页Special Casting & Nonferrous Alloys

基　　金：江西省铜钨新材料重点实验室开放基金项目(2012-KLP-2)

摘　　要：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 2.7and Rhinoceros 5.0software,a 3D geometric model of ceramic foams was constructed based on the Weaire-Phelan model.A mathematical model of the ceramic foam centrifugal filtration for copper alloy melt was built up.Effects of centrifugal speed,the aperture and thickness of ceramic foam on filtration efficiency and pressure loss as well as outlet melt flow rate were simulated.The results show that the main factors affecting the filtration efficiency and pressure loss are the aperture and thickness of ceramic foam.The filtration efficiency and pressure loss are increased with the aperture decrease and the thickness of ceramic foam increase.The outlet melt flow rate is increased with the increase of aperture and centrifugal speed,and decreased with the increase of the ceramic foam thickness.

关 键 词：铜合金熔体 泡沫陶瓷 离心力场 过滤 数值模拟 

分 类 号：TG291[金属学及工艺—铸造]