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首页> 外文期刊>Numerical Heat Transfer, Part B. Fundamentals: An International Journal of Computation and Methodology >A hybrid Cartesian/immersed-boundary finite-element method for simulating heat and flow patterns in a two-roll mill
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A hybrid Cartesian/immersed-boundary finite-element method for simulating heat and flow patterns in a two-roll mill

机译：笛卡尔/浸入边界混合有限元方法，用于模拟两辊轧机中的热和流动模式

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摘要

This article describes numerical investigations of the flow and heat patterns in a two-roll mill using the immersed-boundary finite-element method over a fixed Cartesian grid. The second-order projection method is used to advance the solution in time, and a structured linear-triangle element is employed for the spatial discretization. An easily implemented interpolation scheme is adopted to allow accurate imposition of the boundary conditions on an arbitrary shape. Two numerical experiments are carried out, including two-roll-mill flow generated by the two inner cylinders rotating independently in fixed locations and moving around the center of cavity. The physical characteristics, streamline topologies, and temperature contours are discussed for a range of the rotating velocities and Reynolds numbers. The accuracy and robustness of the developed numerical model are validated by results obtained from the unstructured finite element method.
机译：本文介绍了在固定的笛卡尔网格上使用浸入边界有限元方法对两辊轧机中流动和加热模式进行的数值研究。二阶投影方法用于及时求解，而结构化的线性三角形元素用于空间离散化。采用容易实现的插值方案以允许将边界条件精确地施加在任意形状上。进行了两个数值实验，包括由两个内部圆柱体在固定位置独立旋转并围绕型腔中心移动产生的两辊轧机流动。讨论了一系列旋转速度和雷诺数的物理特性，流线型拓扑和温度轮廓。通过非结构化有限元方法获得的结果验证了所开发数值模型的准确性和鲁棒性。

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