Lift(数据挖掘)
圆柱
涡流
机械
物理
振动
间断(语言学)
旋涡脱落
经典力学
几何学
数学
声学
数学分析
计算机科学
数据挖掘
雷诺数
湍流
作者
Arnab Kumar De,Sandip Sarkar
出处
期刊:Physical review fluids
[American Physical Society]
日期:2022-06-21
卷期号:7 (6)
标识
DOI:10.1103/physrevfluids.7.064702
摘要
The vortex-induced vibration of a circular cylinder near a solid wall exhibits two modes of collision with the wall, namely, ``Impact'' and ``Gracing.'' At the minimum position of the cylinder nearer the wall, the ``Impact'' case corroborates an abrupt change in the velocity gradient with a positive repulsive force magnitude. In contrast, the cylinder embraces the wall and moves away during the ``Gracing'' case, revealing a linear variation of the velocity gradient and nearly-zero repulsive force. The lift signal shows a sudden discontinuity for the ``Impact'' situation while rendering a continuous variation for the ``Gracing.''
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