噪声与振动控制2017，Vol.37Issue(2)：42-46,5.DOI:10.3969/j.issn.1006-1355.2017.02.009
叶型改进对离心通风机内部气动激励影响机理的数值分析研究
Numerical Analysis of Influence of Blade Type Change on Internal Aerodynamic Excitation of Centrifugal Fan
摘要
Abstract
Blade is the key part of centrifugal fans. In order to study the effect of blade type improvement on the vibration of centrifugal fans, the aerodynamic excitation of a centrifugal fan is simulated. Through steady flow calculation, it is found that the improvement of the blade type can delay the flow separation and reduce the incentive factors of the induced vibration. Through unsteady flow calculation, it is found that the effect of blade improvement on the aerodynamic excitation of the centrifugal fan is mainly reflected in the reduction of pressure pulsation, especially in the decrease of the blade frequency pulsation. According to the analysis of the simulation results, the vibration change of the centrifugal fan is evaluated. Test results of the sample fan show that the improvement of blade type can reduce the vibration of blade frequency and the aerodynamic analysis can provide a criterion for the improvement effect evaluation of the fan design.关键词
振动与波/离心通风机/叶型/气动激励Key words
vibration and wave/centrifugal ventilator/the types of blades/aerodynamic excitation分类
机械制造引用本文复制引用
丁可金,王强,王璐,吕亚..叶型改进对离心通风机内部气动激励影响机理的数值分析研究[J].噪声与振动控制,2017,37(2):42-46,5.
