Investigation on Characterization of Typical Characteristic in Compressor Based on Flat Plate Model
Source abstract
Abstract
The acoustic resonance of aero-engine compressors is very harmful, which can lead to the failure of components such as blades. The mechanism of acoustic resonance is very complicated. To solve this problem, characteristics of the noise signal under the abnormal vibration state of the rotor blade are analyzed through the noise measurement in the compressor in the paper. The frequency spectrum characteristics, sound pressure level, and phase relationship of the noise signal corresponding to the abnormal vibration of the rotor blade are captured, and the feature of “frequency locked” which is consistent with the acoustic resonance in the compressor is obtained. Numerical simulation is a better way to study the mechanism of acoustic resonance. Therefore, based on the Parker model, a research method of acoustic resonance characteristics and mechanism based on acoustic analogy is proposed from the solution of the sound-induced in the pipe cavity. The vortex system and sound field characteristics when the acoustic resonance occurs are calculated. The results show that the distribution characteristics of the shedding vortex can be recognized, which are consistent with the experimental results of Welsh when the acoustic resonance occurs. The error of the acoustic resonance frequency from numerical simulation results to experimental is 3.6%. The characteristic of “frequency locked” and Parker β mode of the acoustic resonance is captured. The acoustic analogy method is suitable for the characterization of the acoustic resonance performance and mechanism in the pipeline and in the aeroengine compressor.
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Research context
OpenAlex topics: Aerodynamics and Fluid Dynamics Research · Wind and Air Flow Studies · Aerodynamics and Acoustics in Jet Flows
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
AECC Shenyang Engine Research Institute, Shenyang 110015, China
AECC Harbin Dong’an Engine Co., Ltd., Harbin 150066, China
Funding
China Aviation Development Shenyang Engine Research Institute · Basic Research Project of the 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
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