高湿环境下对旋风机内流场及噪声特性研究  

Study on internal flow and noise characteristics of counter-rotating fan in high humidity environment

作　　者：张浩睿 姜华[1] 吴燕妮 宫武旗[2] ZHANG Haorui;JIANG Hua;WU Yanni;GONG Wuqi(School of Energy,Xi'an University of Science and Technology,Xi'an 710054,China;School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China)

机构地区：[1]西安科技大学能源学院,陕西西安710054 [2]西安交通大学能源与动力工程学院,陕西西安710049

出　　处：《煤矿安全》2023年第8期216-222,共7页Safety in Coal Mines

基　　金：国家基础项目研究资助项目(20195208003)。

摘　　要：为了研究矿井不同湿度环境下对旋风机内流场及气动噪声的影响特性,采用大涡模拟和FW-H声学模型对环境相对湿度分别为0、25%、50%、70%、80%、90%、100%条件下对旋风机流场进行数值模拟,分析内流场涡结构及气动噪声变化规律。结果表明:随着相对湿度增大,风机静压、功率和效率均呈线性趋势降低,风机叶顶泄露涡强度降低,在进出口的监测点上,声压级均有不同程度的降低;相对湿度每升高10%,压升降低2.08%左右,功率降低1.9%左右,效率降低0.57%左右,各监控点A声级降低0.9%。In order to study the influence of different humidity environment on the flow field performance and aerodynamic noise of a counter-rotating axial-flow fan in the mine,the flow field of the fan is numerically simulated with large eddy simulation and FW-H acoustic model under the relative humidity of the environment was 0,25%,50%,70%,80%,90% and 100%,and vortex structure and aerodynamic noise variation in internal flow field is analyzed.The results show that with the increase of relative humidity,and the static pressure,power and efficiency of the fan decrease roughly in a linear trend,the intensity of tip leakage vortex decreases.At the monitoring points of inlet and outlet,the average sound pressure level decreases to varying degrees.When the relative humidity increases by 10%,the pressure rise decreases by about 2.08%,the power decreases by about 1.9%,the efficiency decreases by about 0.57%,and the sound level A at each monitoring point decreases by 0.9%.

关 键 词：对旋风机 大涡模拟 FW-H声学模型 内流场特性 涡结构 气动噪声 

分 类 号：TD441[矿业工程—矿山机电]