摘要
以矿用对旋式轴流通风机为研究对象,应用计算流体力学软件FLUENT在不同叶片数及轴向间隙下对通风机气动性能进行三维流场模拟,分析不同叶片数及轴向间隙对通风机气动性能的影响.结果表明随着通风机前后两级叶轮叶片数的增加,通风机的全压会相应地增大,效率会先提高后降低,即存在一个前后两级叶轮叶片数的最佳组合,此时通风机的气动性能最佳.在前后两级叶轮最佳叶片数组合下,两级叶轮轴向间隙的增大会增加通风机流道内气流的摩擦损失,从而降低通风机的全压和效率;减小两级叶轮的轴向间隙可提高通风机的全压和效率,但叶片的振动和通风机的噪声会有所增大.研究结果对矿用对旋式轴流通风机的优化设计具有一定的指导意义.
The computational fluid dynamics method was used to solve the three-dimensional flow.The effects of blades number and axial clearance on the aerodynamic performance of fan were studied.By increasing the two-stage blades,the total-pressure was enhanced and the efficiency of fan was increased at the beginning and decreased in the end.There was an optimal combination of two-stage blades.Under this condition the optimal aerodynamic performance of fan was obtained.In the optimal combination of two-stage blades condition,as the axial clearance increases,the friction losses of internal flow was improved,the total-pressure and efficiency were decreased.In contrast,the total-pressure and efficiency of fan,the aerodynamic noise and the blades vibration were enhanced with reduced the axial clearance.It is of important significance to the direction of optimization design of mine contra-rotating axial fan.
出处
《湖南科技大学学报（自然科学版）》
CAS
北大核心
2010年第4期29-32,共4页
Journal of Hunan University of Science And Technology：Natural Science Edition
基金
国家自然科学基金资助(51075143)
湖南省自然科学基金重点项目资助(09JJ3093)
湖南省教育厅优秀青年项目(10B030)
湖南科技大学研究生创新基金项目(S090107)
关键词
矿用对旋式通风机
叶片数
轴向间隙
流场分析
mine contra-rotating fan
blades number
axial clearance
flow analysis
