The Characteristics and Mechanisms of High-Intensity Sound in a High-Speed Multistage Compressor
Source abstract
Abstract
An experiment with a multistage high-speed compressor is conducted to investigate the high noise with abnormal blade vibration. Different points are selected to monitor the noise in the compressor and the amplitude of blade vibration. The evolution rhythm of sound frequency and sound pressure level against speed is captured. The relation between the vibration and the noise is obtained. A research method based on an acoustic analogy is developed to investigate the characteristics and mechanisms of high-intensity sound in a rectangular cavity pipeline. The calculated distribution of the first four-order acoustic mode inside the rectangular cavity pipe is consistent with the results in the literature, and the maximum calculation error of the acoustic mode frequency value is 2.7%, which certifies the effectiveness of the method. A simplified compressor model is established to study the vortex system and the sound field characteristics of this method when high-intensity sound occurs. The results present the motion law of shedding vortices with high-intensity sound, and the calculation error of the frequency corresponding to the high-intensity sound is 3.6%. The “frequency-locked phase-locked” characteristics (i.e., character frequency) keep constant at a range of velocities, showing similarity with the phenomenon obtained in experiment above, and beta mode forms of Parker are captured. The study in the present paper makes a contribution for the cognition of mechanisms with high-intensity sound in aeroengine compressors.
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Research context
OpenAlex topics: Aerodynamics and Acoustics in Jet Flows · Turbomachinery Performance and Optimization · Aerodynamics and Fluid Dynamics Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Liaoning Province Key Laboratory of Advanced Measurement and Test Technology of Aviation Propulsion Systems, Shenyang Aerospace University, Shenyang 110136, China
Beijing Aerospace Technology Institute, Beijing 100074, China
Aero Engine Corporation of China (AECC) Shenyang Engine Research Institute, Shenyang 110015, China
Funding
China Aviation Development Shenyang Engine Research Institute · Basic Research Project of Science and Technology Department of Liaoning Province · Scientific Research Foundation for Introduced Scholars of Shenyang Aerospace University · Liaoning Natural Science Foundation Guiding Plan of China · National Science and Technology Major Project
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