摘要
分析了某小型双辊铝铸轧机上的铸嘴内部型腔的形状对铸嘴型腔内流场产生的影响。使用了通用的有限元分析软件ANSYS ,对结构进行简化 ,建立二维有限元模型 ,加载计算 ,最后分析求解的结果。力图通过数值模拟 ,进行虚拟的流体流动实验 ,从而找到在相同的铸轧立板速度 (即铝熔体在铸嘴型腔的入口流量保持不变的情况 )下 ,不同形状的型腔对其内部铝熔体的流场速度的影响规律 ,为指导实际型腔的设计提供了数值模拟的有力依据。通过二维有限元数值模拟分析发现 ,在相同的流量下 :侧边形状为直边时 ,入口宽度在 14 0mm左右 ,出口速度的 y向均整性最好 ;相同入口宽度下 。
In this paper, we analyse the influence of the shape of nozzle cavity on cavity fluid field in a small-scale twin roll casting strip casting of Aluminium. With the aid of the general finite element analysis tool — ANSYS, we simplify the construction, build a two-dimensional finite element model, solve based on this model with loading conditions and give discussion on the results. Our purpose is to conduct experiment on fluid flowing through numerical simulation, for the purpose of finding out the rules how the different shape of nozzle cavity affects the velocity of liquid metal of Aluminum inside with same casting speed. The analysis shows that under the identical flow, the uniform exit distribution velocity in Y direction is the best when the side shape is straight line, and the width of entrance is within the range of 140 mm; and under the same width of entrance, the boundary condition of divergent side which shape is straight line with nozzle spacer is more significant for the uniform distribution of exit velocity than the boundary condition of divergent side which shape of curve.
出处
《机械》
2003年第5期7-9,共3页
Machinery
基金
国家"973"计划项目 (G1 9990 6490 6)
