(中南大學 機電工程學院， 長沙 410083)
摘 要: 研究了鋁鑄軋的前箱及鑄嘴型腔的流場的有限元分析的計算標準； 采用通用有限元計算軟件ANSYS的FLOTRAN模塊對型腔流場進行模擬計算； 對計算結果運用ANSYS自帶的后處理技術及使用MATLAB軟件對結果數(shù)據(jù)進行了處理， 比較了兩種模擬工況的流場模型的出口速度線圖， 并參照兩次現(xiàn)場實驗的現(xiàn)象及數(shù)據(jù)， 定量討論了流場有限元計算的出口速度的絕對誤差、 相對誤差， 及其與出板速度、 出口開口度大小等因素的關系。 總結了流場有限元計算的許用不均勻度， 即穩(wěn)定生產(chǎn)所要求的流場波動限度的標準的取值范圍及其適用條件， 為未來有限元分析計算確定了初步依據(jù)。
關鍵字: 鑄軋； 流場； 有限元分析； 許用不均勻度
（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
