Linearized Formulation for Fluid-Structure-Interaction for Rigid-Body Motion

被引：0
|
作者：
Negi, Prabal S. [1 ,2 ]
Hanifi, Ardeshir [1 ,2 ]
Henningson, Dan S. [1 ,2 ]
机构：
[1] KTH Royal Inst Technol, Dept Engn Mech, Linne Flow Ctr, Stockholm, Sweden
[2] KTH Royal Inst Technol, Swedish E Sci Res Ctr SeRC, Stockholm, Sweden
来源：
IUTAM LAMINAR-TURBULENT TRANSITION | 2022年 / 38卷
基金：
欧洲研究理事会;
关键词：
STABILITY ANALYSIS; NUMERICAL-SIMULATION; FLOW; CYLINDER; TRANSPIRATION; INSTABILITY; BOUNDARY;
D O I：
10.1007/978-3-030-67902-6_39
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A linearized formulation for fluid-structure-interaction problems exhibiting rigid-body-motion is presented. The linearized equations are evaluated on a stationary grid and require no mesh motion. Numerical tests are performed to validate the derived formulation by comparing the time evolution between the linear and non-linear equations. In all cases both the growth rate and angular frequency of the instability matches to within 0.1% accuracy. The derived formulation is used to predict the phenomenon of symmetry breaking for a rotating cylinder with an attached splitter-plate, the onset of aeroelastic pitch-oscillations for a NACA0012 airfoil at transitional Reynolds numbers, and investigate the structural sensitivity of the least stable eigenvalue for an oscillating cylinder.
引用
收藏
页码：459 / 468
页数：10
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