Research Initiation Award: Microscopic Studies of Interfacial Transport Processes in the Dendritic Mushy Zone

结构材料的力学性能往往取决于凝固过程中的过程。模拟凝固是困难的，因为糊状区中的现象发生在许多不同的长度和时间尺度上。通过对微观水平上的流场、温度场和浓度场的元胞自动机模拟，研究枝晶组织与宏观输运的关系。通过统计分析，微观结构模型的结果可以与宏观现象相耦合。更好地了解固化过程中涉及的基本过程，应该会减少许多固体材料的生产过程中的浪费，提高效率，使美国工业更具竞争力。

CTS-9308841 Drexel University Xiaowei S. He ABSTRACT Mechanical properties of structural materials often depends on the processes occuring during solidification. Modeling solidification is difficult because phenomena in the mushy zone occur over many different length and time scales. The relationships between dendritic microstructure and macroscopic transport will be investigated with cellular automaton simulation of flow, temperature and concentration fields at the microscopic level. Results for the microstructure model can be coupled to macroscopic phenomena by statistical analysis. Better understanding of the underlying processes involved during solidification should lead to less waste and increased efficiency during production of many solid materials, making American industry more competitive.