Numerical simulation on a limit cycle oscillation of a rectangular sheet in three-dimensional flow: influence of vortex element model on post-critical behavior

被引：0
作者：
Keiichi Hiroaki
Yutaka Hayashi
Masahiro Watanabe
机构：
[1] Aoyama Gakuin University,Department of Mechanical Engineering
来源：
Nonlinear Dynamics | 2021年 / 106卷
关键词：
Flutter; Limit cycle oscillation; Vortex method; Fluid–structure interaction; CFD;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The flutter of thin elastic plates (sheets) in a fluid flow is an interesting nonlinear problem, as well as an important engineering problem, because the sheets are used in many industrial applications. A detailed understanding of flutter characteristics and sustaining mechanism of limit cycle oscillation (LCO) is important to suppress the flutter. In this study, a nonlinear analysis on a LCO of rectangular sheets in a three-dimensional uniform fluid flow using the nonlinear beam model and vortex-lattice method is performed. The influence of the vortex element model of the vortex-lattice method on the post-critical behavior is investigated in detail. Moreover, fluid–structure interaction simulations are performed using computational fluid dynamics and computational structural dynamics to examine the flow field and pressure distributions acting on a sheet surface in detail. It is found that flow separation around the side edges of a fluttering sheet can affect the post-critical behavior.
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页码：2893 / 2917
页数：24
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