关键词: 拓扑重构, 特征提取, 流线跟踪, 地下水渗流场

Abstract: The formation and visualization of underwater streamline can help to improve the efficiency of numerical simulation during post processing stage.In the paper，the aim of this study is to simulate the continuous streamline in the groundwater seepage field.The core-topology and extensibility-topology to be reconstructed dynamically are researched.Some features have been extracted for streamline simulation in the complex field based on the finite model theory.And then，a fast and robust algorithm of streamline dynamic tracking is designed to calculate streamline and flow time.A concrete example of using the method to Beijing plain area shows that the method can implement the complex flow field simulation with/without the virtual wells to be exploited.

Key words: topology-reconstruction, feature extraction, streamline tracking, groundwater seepage field