A Convenient Visualization Method for Identifying Vortex Centers

Keisuke SAWADA

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A Convenient Visualization Method for Identifying Vortex Centers

机译：识别涡旋中心的便捷可视化方法

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When a linear parametrization is applied to the cellwise velocity distribution given by a numerical solution, the streamline equations become a set of linear, ordinary differential equations whose solutions can be found quite easily. The analytic expression of the local streamline solutions enables us to identify the focal point of a vortex as well as the centerline of a longitudinal vortex core. The present method identifies the vortex center as a collection of the line segments locally defined in the computational cells. The results of a test calculation as well as practical applications dealing with unsteady vortical flows are shown to examine the present approach. It is demonstrated that the unsteady vortex motions can be conveniently visualized by showing their temporal core positions.

机译：将线性参数化应用于数值解给出的单元速度分布时，流线方程成为一组线性，常微分方程，其解很容易找到。局部流线解决方案的解析表达式使我们能够确定涡旋的焦点以及纵向涡旋核的中心线。本方法将涡旋中心识别为在计算单元中局部定义的线段的集合。显示了测试计算的结果以及处理不稳定涡流的实际应用，以检验本方法。结果表明，通过显示不稳定的涡旋运动的时间核心位置，可以方便地对其进行可视化。

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来源
《Transactions of the Japan society for aeronautical and space sciences》 |1995年第120期|p.102-116|共15页
作者
Keisuke SAWADA;
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作者单位

Department of Aeronautics and Space Engineering, Tohoku University, Sendai, Japan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类航空;
关键词
fluid dynamics; vortex center; visualization method; streamline integration;

机译：流体动力学涡旋中心可视化方法流线集成;

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1. Direct visualization of the vortex distributions in a superconducting film with a Penrose array of magnetic pinning centers: Symmetry induced giant vortex state [J] . Kramer R.B.G., Silhanek A.V., Van De Vondel J., Physica, C. Superconductivity and its applications . 2010,第19期

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2. Direct visualization of the vortex distributions in a superconducting film with a Penrose array of magnetic pinning centers: Symmetry induced giant vortex state [J] . Kramer R.B.G., Silhanek A.V., Van De Vondel J., Physica, C. Superconductivity and its applications . 2010,第19期

机译：具有Penrose磁性钉扎中心阵列的超导膜中涡旋分布的直接可视化：对称性诱导的巨大涡旋状态
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A Convenient Visualization Method for Identifying Vortex Centers

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