( 1. 东北大学 材料与冶金学院， 沈阳 110006；
2. 沈阳理工大学 材料科学与工程学院， 沈阳 110168)
摘 要: 采用可视观察方法研究了铝液充型过程的二维流动状态， 并与水模拟实验进行了对比分析， 通过调整水粘度来保证水模拟过程与铝液充型过程的相似性。以PIV技术为基础， 运用数字视频处理中的运动补偿技术， 选用NCCF准则和三步搜索法对低压铸造浇注系统水模拟充型过程的内部二维流场进行了计算和分析；运用边缘检测及提取技术， 选用Roberts边缘检测算子对低压铸造浇注系统水模拟充型过程的二维表面流场进行了计算和分析，实现了水模拟过程的量化分析。
关键字: 铝液充型； 水模拟； 粒子图像测速技术； 流场； 计算机可视化
（ 1. College of Materials and Metallurgy, Northeastern University,
Shenyang 110006, China;
2. College of Materials Science and Engineering,
Shenyang Ligong University, Shenyang 110168, China）
Abstract: The two-dimension flowing state of aluminum liquid filling process was studied by video observation and was contrasted with water simulation experiment, which ensure water simulation comparability with aluminum liquid filling process by changing water viscosity. On PIV technology, the inside two-dimension fluid field of water simulation filling process for low-die casting gating was calculated and analyzed by movement compensate technology in digital video processing and NCCF rule. On edge inspecting and picking-up technology, the two-dimension surface fluid field of water simulation filling process for low-die casting gating was calculated and analyzed by Roberts edge inspect arithmetic operators. It realizes the quantity analyses of water simulation process.
Key words: aluminum liquid filling; water simulation; particle image velocimetry technology(PIV); fluid field; computer video
