基于计算颗粒流体力学的射砂过程数值模拟  

Simulation of Sand Shooting Process Based on Computational Particle Fluid Dynamic

作　　者：张影 廖敦明[1] 曹流 孙飞[1] 陈涛[1] ZHANG Ying;LIAO Dunming;CAO Liu;SUN Fei;CHEN Tao(College of Materials Science and Engineering,Huahefang United Laboratory for Intelligent and Green Casting Technology,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学材料科学与工程学院,华合方智能绿色铸造技术联合实验室,湖北武汉430074

出　　处：《铸造技术》2018年第12期2754-2758,共5页Foundry Technology

基　　金：教育部新世纪优秀人才支持计划(NCET-13-0229);华合方实验室基金(由陕西方直贸易有限公司资助)

摘　　要：砂芯通常采用射砂方法制作,通过对射砂过程进行数值模拟,可以观测砂芯成型过程,研究射砂过程的影响因素,为生产高质量砂芯提供保证。基于计算颗粒流体力学(CPFD)方法,对射砂过程进行了数值模拟。同时,对两组射砂头高度下的射砂过程进行了对比。结果表明,芯盒内砂粒的流动过程与实验数据吻合较好,该方法能够有效模拟射砂过程。当射砂头高度选取不合适时,会出现穿孔缺陷。The sand core was usually made by sand shooting technique. Through numerical simulation of sand shooting process, forming of sand cores can be observed and the influencing factors of sand shooting process can be studied,providing assurance for high quality cores. The CPFD method was used to simulate the core shooting process. At the same time, the sand shooting process was compared for the two shooting head heights. The results show that the flow process of the sand in the core box is in good agreement with the experimental data, and this method can be effectively simulated the sand shooting process. When the height of the shooting head is not suitable, there will be perforation defects.

关 键 词：射砂过程 数值模拟 CPFD 

分 类 号：TG242[金属学及工艺—铸造]