(中南大学 机电工程学院， 长沙 410083)
摘 要: 研究了铝铸轧的前箱及铸嘴型腔的流场的有限元分析的计算标准； 采用通用有限元计算软件ANSYS的FLOTRAN模块对型腔流场进行模拟计算； 对计算结果运用ANSYS自带的后处理技术及使用MATLAB软件对结果数据进行了处理， 比较了两种模拟工况的流场模型的出口速度线图， 并参照两次现场实验的现象及数据， 定量讨论了流场有限元计算的出口速度的绝对误差、 相对误差， 及其与出板速度、 出口开口度大小等因素的关系。 总结了流场有限元计算的许用不均匀度， 即稳定生产所要求的流场波动限度的标准的取值范围及其适用条件， 为未来有限元分析计算确定了初步依据。
关键字: 铸轧； 流场； 有限元分析； 许用不均匀度
（School of Mechanical and Electrical Engineering,
Central South University, Changsha 410083, China）
Abstract: To explore the computation standards for finite element analysis of the fluid fields of the front-box and the nozzle-shaped space of aluminum roll-casting, the computation was performed by using the FLOTRAN module of the general finite element analysis software ANSYS. Postprocessing by ANSYS and stricter analysis of results by software MATLAB was reviewed. The allowable inhomogeneity and its applicabilities for fluid field finite element analysis have been rendered down from observations and recorded data of two experiments in reality. The primary standard of finite element analysis will be enriched by the developing technique of experiments and software.
Key words: roll cast; fluid field; finite element analysis; allowable inhomogeneity
