Aeroelasticity design and evaluation methodologies for gas turbine axial compressor: focus on fluttering phenomena

IF 1.5 4区 工程技术 Q3 ENGINEERING, MECHANICAL Journal of Mechanical Science and Technology Pub Date : 2024-08-02 DOI:10.1007/s12206-024-2108-3
Hyun-Su Kang, Youn-Jea Kim
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Abstract

The consideration of aeroelasticity is essential during the development phase of axial flow compressors, and its implications should be factored into the operational planning of gas turbines. While synchronous vibration can typically be mitigated during the blade design stage, the complete avoidance of non-synchronous vibration remains a challenge, prompting ongoing research efforts for predictive solutions. The study utilized an industrial gas turbine axial compressor with 1.5-stage blades for aerodynamic performance and flutter assessments. The calculated results were comprehensively compared with those of 1.5-stage scaled rig test. The comparative analysis demonstrated a strong alignment between predictions regarding aerodynamic performance and the presence or absence of flutter. Furthermore, unsteady flutter calculations were conducted for cases both with and without flutter, allowing for a detailed analysis of the factors contributing to flutter occurrence. Through this investigation, the study established methodologies for aeroelastic design and evaluation, along with a proposed approach for preventing flutter generation.

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燃气轮机轴向压缩机的气动弹性设计和评估方法:关注扑翼现象
在轴流式压缩机的开发阶段,考虑气动弹性是非常重要的,在燃气轮机的运行规划中也应考虑到气动弹性的影响。虽然同步振动通常可以在叶片设计阶段得到缓解,但要完全避免非同步振动仍是一个挑战,这促使我们不断研究预测性解决方案。这项研究利用了一台带有 1.5 级叶片的工业用燃气轮机轴向压缩机来进行气动性能和扑动评估。计算结果与 1.5 级缩放钻机测试结果进行了全面比较。对比分析表明,气动性能预测结果与是否存在扑翼之间存在很强的一致性。此外,还对存在和不存在扑翼的情况进行了非稳态扑翼计算,以便详细分析导致扑翼发生的因素。通过这项调查,研究确立了气动弹性设计和评估的方法,并提出了防止扑翼产生的方法。
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来源期刊
Journal of Mechanical Science and Technology
Journal of Mechanical Science and Technology 工程技术-工程:机械
CiteScore
2.90
自引率
6.20%
发文量
517
审稿时长
7.7 months
期刊介绍: The aim of the Journal of Mechanical Science and Technology is to provide an international forum for the publication and dissemination of original work that contributes to the understanding of the main and related disciplines of mechanical engineering, either empirical or theoretical. The Journal covers the whole spectrum of mechanical engineering, which includes, but is not limited to, Materials and Design Engineering, Production Engineering and Fusion Technology, Dynamics, Vibration and Control, Thermal Engineering and Fluids Engineering. Manuscripts may fall into several categories including full articles, solicited reviews or commentary, and unsolicited reviews or commentary related to the core of mechanical engineering.
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