A numerical investigation on direct and data-driven flutter prediction methods

被引：3

作者：

Simiriotis, Nikolaos ^{[1
]}

Palacios, Rafael ^{[1
]}

机构：

[1] Imperial Coll, London SW7 2AZ, England

来源：

JOURNAL OF FLUIDS AND STRUCTURES | 2023年 / 117卷

基金：

欧盟地平线“2020”;

关键词：

Flutter; Limit -cycle oscillations; Harmonic balance; Unsteady aerodynamics; Numerical methods; Loewner framework; INTERPOLATION; SIMULATION;

D O I：

10.1016/j.jfluidstructs.2023.103835

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Three alternative algorithms for dynamic aeroelastic stability analysis are investigated. They are based either on direct search of oscillatory conditions of the coupled system or on eigenvalue analysis from frequency-domain sampling of the unsteady aerodynamics. The aerodynamic forcing is obtained with a harmonic-balanced solver developed for a general-purpose finite-volume fluid dynamics solver. This new implementation is first verified against experimental flutter results from the literature. A wing with relatively low bending stiffness is then used to explore the relative performance of each approach, both in terms of the numerical robustness and of their usability to support aeroelastic design. (c) 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC

引用

页数：18

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