流体机械Issue(9)：26-30,42,6.DOI:10.3969/j.issn.1005-0329.2015.09.006
倾斜蜗舌对前弯离心风机蜗舌区域流动影响的数值研究
Numerical Analysis of Flow Characteristics in Volute Tongue of Forward Curved Centrifugal Fan Affected by Inclined Volute Tongue
陈阳 1黄友根 1王军 1付观井 2黄健洪2
作者信息
- 1. 华中科技大学，湖北武汉 430074
- 2. 佛山市南海九洲普惠风机有限公司，广东佛山 528222
- 折叠
摘要
Abstract
In order to analyze the unsteady flow characteristics in the tongue area of centrifugal fan under the tongues with dif-ferent inclined angle,this paper takes a forward centrifugal fan for study.Three different types of modified centrifugal fans were simulated and unsteady numerical simulation was conducted using large-eddy simulation at optimum condition.The results indica-ted that as the inclined angle increased,the total pressure of the centrifugal fan reduced,and an appropriate tilt angle could en-hance the total pressure efficiency.Besides,as the inclined angle increased,the highest pressure region moved from the middle po-sition of tongue to the position near the back cover plate.For different inclined angle configurations,the blade passing frequency was dominate in the pressure fluctuation of point P2 on the middle position of tongue,while the rotating frequency or two times ro-tating frequency dominated the pressure pulsations of point P1 and P3 .关键词
前向离心风机/倾斜蜗舌/数值模拟/压力脉动Key words
centrifugal fan/inclined volute tongue/numerical simulation/pressure pulsation分类
机械制造引用本文复制引用
陈阳,黄友根,王军,付观井,黄健洪..倾斜蜗舌对前弯离心风机蜗舌区域流动影响的数值研究[J].流体机械,2015,(9):26-30,42,6.
