Blade vibration measurement and numerical analysis of a mistuned industrial impeller in a single-stage centrifugal compressor
Blade vibration measurement and numerical analysis of a mistuned industrial impeller in a single-stage centrifugal compressor
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单级离心压缩机失调工业叶轮叶片振动测量与数值分析
DOI：
10.1016/j.jsv.2021.116068
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发表时间：
2021-03
影响因子：
4.7
通讯作者：
Cao Hongwei
中科院分区：
文献类型：
--
作者：
Zhao Xinwei;Li Hongkun;Yang Shuhua;Fan Zhenfang;Dong Jiannan;Cao Hongwei
了解和预测叶轮结构在实际工况下的动力特性对叶轮无共振可靠设计具有重要意义。本文提出了一种考虑实际运行环境和失谐效应的叶轮叶片振动高保真测量和高效建模的新方法。为了弄清叶片受迫振动，进行了应变仪和叶尖定时（BTT）测量。测量引入的误差和应变片的流动干扰进一步排除了尖端定时。利用参数估计方法对叶片失谐进行识别和量化，并更新数值失谐力响应模型。基于解耦的两排结构和时间变换方法，对下游扩压叶的气动强迫函数进行了数值计算。结果表明，BTT系统可以很好地用于捕获叶片共振响应，为监测单个叶片部件提供了一种很有前途的方法。气动力也被很好地捕获，并沿流道向上游呈现波衰减趋势。最后，基于所提出的BTT参数驱动振动预测方法，叶片失谐强迫响应与实测结果吻合较好。改进还意味着在数值预测中应考虑参数变化和失谐模式作为关键部分和不确定源。本文的工作对于丰富利用叶尖定时方法研究离心式压缩机叶片振动具有科学意义，对于利用高效降阶建模方法考虑失谐问题具有工业应用价值。
Understanding and predicting the dynamical behavior of the impeller structure under realistic condition is vital for resonance-free and reliable design. This paper presents a novel method for high fidelity measurement and efficient modeling of impeller blade vibration considering realistic operating environment and mistuning effect. To clarify the blade forced vibration, strain gauge and blade tip timing (BTT) measurement have been conducted. Measurement introduced mistuning and flow disturbance from strain gauges are further excluded with tip-timing. The blade mistuning is then identified and quantified with the help of parameter estimation method and updates the numerical mistuned forced response model. Aerodynamic forcing function due to downstream diffuser vanes is also numerically evaluated based on a decoupled two row configuration and time transformation method. Results shown that BTT system is well applied to capture the blade resonance response and shows a promising way for monitoring individual blade component. The aerodynamic forcing is also found to be well captured and presents a wave decay trend along the flow path towards the upstream. Finally, based on the proposed BTT parameter driven vibration prediction method, the blade mistuned forced response shows a good agreement with measurement results. Improvement also implies variations of parameters and mistuning pattern should be considered as a critical part and uncertainty source in the numerical prediction. This work is of scientific significance to enrich the knowledge of blade vibration in centrifugal compressor using tip-timing and of industrial application value to consider mistuning problems with efficient reduce-order modeling method.
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DOI：
10.1115/1.3240296
发表时间：
1989-10
影响因子：
1.5
作者：
M. P. Singh;J. Vargo
通讯作者：
M. P. Singh;J. Vargo
影响因子：
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作者：
Oualid Khemiri;C. Martel;R. Corral
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Oualid Khemiri;C. Martel;R. Corral
DOI：
10.1115/gt2011-46690
发表时间：
2011
期刊：
--
影响因子：
--
作者：
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通讯作者：
M. Mayorca;D. Vogt;H. Mårtensson;T. Fransson
影响因子：
4.7
作者：
L. Bertini;P. Neri;C. Santus;A. Guglielmo;G. Mariotti
通讯作者：
L. Bertini;P. Neri;C. Santus;A. Guglielmo;G. Mariotti
影响因子：
8.4
作者：
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通讯作者：
F. Nyssen;J. Golinval