Vibro-acoustics of a pipeline centrifugal compressor part I. Experimental study

Zhou, Huihui; Mao, Yijun; Zhang, Qunlin; Zhao, Cun Sheng; Qi, Datong; Diao, Quan

doi:10.1016/j.apacoust.2017.10.011

Cited by 11 publications

(6 citation statements)

References 24 publications

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“…Therefore, the disturbances generated from the impeller-diffuser interaction can be greatly suppressed at the compressor inlet and outlet. Moreover, the amplitude of velocity disturbances sampled from C3 is lower about one order of magnitude than that sampled from C30, this result implies that the tonal noise correlated with the blade passing frequency is mainly radiated from the compressor outlet rather than the compressor inlet, and this phenomenon has been observed in previous experimental and numerical studies, such as (Zhou et al, 2016(Zhou et al, , 2018. More analysis on this topic will be performed in Section 4.2.3.…”

Section: Instantaneous Velocity Fieldmentioning

confidence: 74%

“…Moreover, Figure 14(b,e) indicate that discrete highfrequency components of the velocity fluctuations, i.e.f /f r = 34, 51, 68, 85, are visible in the region between the impeller outlet and the diffuser inlet, but these components sharply decrease with propagation in the upstream and downstream directions, as shown in Figure 14(a,d,f). Therefore, at the compressor inlet and outlet, tonal noise at the BPF is dominant but the component at the high-order harmonics of the BPF is much smaller than that at the BPF, this feature has been validated by experimental studies of subsonic centrifugal compressors, such as (Zhou et al, 2018).…”

Section: Power Density Spectra Of Velocitymentioning

confidence: 79%

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Numerical study of wake and potential interactions in a two-stage centrifugal refrigeration compressor

Fan

Zhang

et al. 2021

Engineering Applications of Computational Fluid Mechanics

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Both potential and wake interactions are usually the primary mechanisms related to the unsteadiness in turbomachines. However, it is usually difficult to distinguish their effects on flow evolution. This paper develops a direct and visual method to investigate the effects of wake and potential interactions on features of the flow velocity in a two-stage centrifugal refrigeration compressor. The centrifugal compressor consists of six cascades of blades/vanes, i.e. inlet guide vanes in the first stage, impeller blades and vaned diffusers in both stages and return channel in the second stage. The detailed features of flow velocity, such as time-averaged flow velocity, instantaneous flow velocity and power density spectrum of the flow velocity, downstream each cascade of blades/vanes are studied in detail to investigate the potential and wake interactions on the flow evolution in the centrifugal compressor.

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Section: Instantaneous Velocity Fieldmentioning

confidence: 74%

Section: Power Density Spectra Of Velocitymentioning

confidence: 79%

Numerical study of wake and potential interactions in a two-stage centrifugal refrigeration compressor

Fan

Zhang

et al. 2021

Engineering Applications of Computational Fluid Mechanics

Self Cite

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“…The indirect measurement method is to measure and analyze the parameters that are related to flow-induced noise such as pressure [73][74][75], velocity [12,[76][77][78] and vibration signal [79][80][81][82][83], then establish the relationship between these parameters and flow-induced noise. Different from the indirect measurement, the direct measurement is more convenient and it is realized by measuring the flow-induced noise directly.…”

Section: Experimental Measurement Studymentioning

confidence: 99%

“…The analysis above only discusses the overall vibration intensity at different locations, while the analysis of the relationship between vibration and noise is not involved. Based on coherence analysis, Zhou et al [83] analyzed the distribution characteristics of the vibration signal and noise signal in the frequency domain, as shown in Figure 6. The coherence coefficient between vibration and noise is close to 1 at characteristic frequencies, which further reveals the relationship between vibration and noise.…”

Section: Noise Source Identification and Comparisonmentioning

confidence: 99%

A Review of the Flow-Induced Noise Study for Centrifugal Pumps

Guo

Gao

2020

Applied Sciences

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Flow-induced noise is a significant concern for the design and operation of centrifugal pumps. The negative impacts of flow-induced noise on operating stability, human health and the environment have been shown in many cases. This paper presents a comprehensive review of the flow-induced noise study for centrifugal pumps to synthesize the current study status. First, the generation mechanism and propagation route of flow-induced noise are discussed. Then, three kinds of study methodologies, including the theoretical study of hydrodynamic noise, numerical simulation and experimental measurement study, are summarized. Subsequently, the application of the three study methodologies to the analysis of the distribution characteristics of flow-induced noise is analyzed from aspects of the noise source identification and comparison, the frequency response analysis, the directivity characteristics of sound field and the noise changing characteristics under various operating conditions. After that, the analysis of the noise optimization design of centrifugal pumps is summarized. Finally, based on previous study results, this paper puts forward the unsolved problems and implications for future study. In conclusion, the information collected in this review paper could guide further study of the flow-induced noise of centrifugal pumps.

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“…Among the present, Laser Beam Welding of metallic plates offers considerable advantages over the conventional techniques. Some of these advantages include precision of operation, local processing, fast processing time, and low cost [1]. The proper selection of welding parameters is necessary for defect-free welded joints.…”

Section: Introductionmentioning

confidence: 99%

Multi Sources Information Fusion Based on Bayesian Network Method to Improve the Fault Prediction of Centrifugal Compressor

Nessaib

Lakehal

2022

Strojnícky Časopis - Journal of Mechanical Engineering

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The centrifugal compressor is an important machine in the oil and gas industry, so the fault prediction of these machines is widely discussed in the literature. Several techniques can and should be used in fault prediction of centrifugal compressors: vibration analysis, non-destructive testing techniques, operating parameters, and other techniques. But in particular cases, these tools are inefficient for making a decision regarding the combined fault diagnosis and prediction. This paper presents a contribution to fault prediction in centrifugal compressor utilizing multi-source information fusion by a Bayesian network. The data fusion does not come from the same source, but rather from vibration analysis, oil analysis, and operating parameters. In addition, the accuracy and ability of fault prediction can be improved compared with the use of data obtained from vibration analysis only or oil analysis. The proposed method accuracy is validated on a BCL 406 type centrifugal compressor. Furthermore, the obtained results showed the effectiveness of the multi-source information fusion by Bayesian network approach gives more accuracy to decision-making in fault prediction and the developed method has an effect in predicting the combined faults.

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Vibro-acoustics of a pipeline centrifugal compressor part I. Experimental study

Cited by 11 publications

References 24 publications

Numerical study of wake and potential interactions in a two-stage centrifugal refrigeration compressor

Numerical study of wake and potential interactions in a two-stage centrifugal refrigeration compressor

A Review of the Flow-Induced Noise Study for Centrifugal Pumps

Multi Sources Information Fusion Based on Bayesian Network Method to Improve the Fault Prediction of Centrifugal Compressor

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