The spray effect and spray noise often exhibit a mutually restrictive relationship,making it difficult to opti-mize both simultaneously while achieving good spray performance is often accompanied by high noise levels.To address this,a spray noise diagnostic system experimental platform was established to analyze the far-field noise characteristics and occurrence mechanisms of single-phase spray.The study investigated the influence of monitoring angle,spray flow rate,and nozzle diameter on the noise characteristics of single-phase spray.The results revealed that the total sound pres-sure level of single-phase spray noise increases with flow rate and radiates downstream along the axis.Monitoring angle,spray flow rate,and nozzle diameter all affect the noise spectrum characteristics,with noise peaks above 4 kHz gradually disappearing as the monitoring angle increases.Additionally,as the spray flow rate increases,low-frequency noise below 315 Hz gradually decreases,while high-frequency noise increases.A reduction in nozzle diameter leads to distinct and stable noise peaks at 2.8,4.5 and 6.3 kHz.This in-depth study of the generation mechanism and radiation characteristics of spray noise holds significant practical and theoretical value for predicting and controlling its impact in real-world ap-plications.
维普
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