Fluid-structure interaction investigation on composite nano rotor at low Reynolds number

被引：0
|
作者：
Liu Z. [1 ]
Yang D. [1 ]
Bu C. [1 ]
机构：
[1] State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi'an Jiaotong University, Xi'an
来源：
| 2018年 / Nanjing University of Aeronautics an Astronautics卷 / 31期
关键词：
Aerodynamic characteristics; Composite materials; Fluid-structure interaction; Nano rotor;
D O I：
10.16385/j.cnki.issn.1004-4523.2018.02.011
中图分类号：
学科分类号：
摘要：
The composite light-weight nano rotor suffers aerodynamic forces, which induces deformation and vibration resulting in the change of rotor performance and structure failure. A non-contact modal experimental platform is established and the finite element model of the nano rotor based on laminated composite is generated. The dynamic characteristics of the nano rotor are studied experimentally and numerically. The first five modes and natural frequencies are obtained and the finite element model is validated. A static performance test bench is established with small-capacity force and torque sensor for the nano rotor and the propulsive performance of nano rotor is measured. A fluid solver is established based on multi-block structured grids, multi-reference frame method and two-equation turbulence model. With a finite-element structure solver, a fluid-structure solver is established based on radial basis function method for data transfer at the interface. The fluid-structure interaction analysis is then carried out and the dynamic response and propulsive performance of the nano rotor are obtained and compared with experiment results. It can be found that the fluid-structure interaction solver predicts a more accurate result (relatively 7% error) than the only fluid solver (relatively 11% error). In addition, no flutter is observed which shows that the structure system is stable. It is evidenced that the fluid-structure interaction method is necessary to study the aerodynamic performance and structural dynamic characteristics of the composite nano rotor. © 2018, Nanjing Univ. of Aeronautics an Astronautics. All right reserved.
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页码：283 / 290
页数：7
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