Study on the Characteristics of Fluid Noise Change in High Speed Vane Pump
In order to study the generation mechanism and variation characteristics of blade pump noise under high speed operating conditions,computational fluid dynamics and computational aeroacoustics joint simulation technology were used to numerically simulate the fluid noise variation law of high speed blade pumps.By establishing a computational model for fluid noise in high speed vane pumps,the effects of rotational speed and oil temperature on fluid noise in high speed vane pumps were studied,taking into account acoustic solid coupling.And experimental verification was made.The results show that at the same frequency,the intensity of the body sound source is higher than that of the surface sound source,and as the frequency increases,the overall sound pressure shows a downward trend.As the oil temperature increases,the fluid noise caused by flow pulsation and cavitation decreases.For every 30 ℃ increase in temperature,the overall noise value decreases from 1.15 dB to 8.76 dB.
high speed vane pumpfluid noisesound source conversionflow pulsationcavitation noise
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