【摘要】：以吸葉機離心風機系統(tǒng)為研究對象,針對吸葉機氣動噪聲與出口流量的雙目標優(yōu)化問題,運用有限元與試驗相結合的方法對其進行分析與優(yōu)化以達到降低整機噪聲的效果。首先運用CFD技術對原吸葉機模型進行流場和聲場的仿真分析,并在此基礎上提出了長短葉片葉輪優(yōu)化方案,在拉丁超立方抽樣模型的指導下求解了短葉片的多項具體參數(shù),通過融合分析多項參數(shù)獲得了長短葉片的最優(yōu)組合方案,最后再次通過仿真與試驗相結合的方法對優(yōu)化方案的實際效果進行了驗證。結果表明,短葉片的加入不僅可以保持原有的風機性能,還能夠達到降噪1.2 d B左右的效果。該方案的提出不僅有效降低了風機噪聲,還為產(chǎn)品的降噪優(yōu)化提供了合理的技術路線,具有廣泛的應用價值。
[Abstract]:Taking the centrifugal fan system of the vane suction machine as the research object, aiming at the double objective optimization problem of the aerodynamic noise and the outlet flow rate of the blade suction machine, the finite element method and the test method are used to analyze and optimize it in order to achieve the effect of reducing the noise of the whole machine. Firstly, the flow field and sound field of the original blade suction machine model are simulated and analyzed by using CFD technology. On this basis, the optimization scheme of the long and short blade impeller is proposed. Under the guidance of the Latin hypercube sampling model, several specific parameters of the short blade are solved. The optimal combination scheme of long and short blades is obtained by fusion analysis of several parameters. Finally, the practical effect of the optimization scheme is verified by the combination of simulation and experiment. The results show that the addition of short blade can not only maintain the original performance of fan, but also achieve the effect of reducing noise about 1.2 dB. The proposed scheme not only effectively reduces fan noise, but also provides a reasonable technical route for the optimization of product noise reduction, and has wide application value.
【作者單位】： 東南大學機械工程學院;
【分類號】：TB53
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本文編號：2230309