摘要
采用计算流体动力学(CFD)和计算声学(CAA)相结合的方法,对轴流式通风机的离散噪声进行了数值模拟。在定常流动数值计算的基础上,利用宽频声源模型确定了轴流风机主要气动噪声源的位置;采用大涡模拟(LES)方法结合FW-H声学模型,模拟了轴流风机的离散噪声分布。研究结果可为低噪声轴流风机参数优化和结构设计提供参考。
Numerical simulation of the discrete noise in an axial-flow fan was performed by utilizing the method of CFD in conjunction with CAA. The location of dominant aerodynamic noise source was founded according to the Broadband Noise Sources model based on the steady flow simulation. The distribution of the discrete noise in the axial-flow fan was simulated by using the large eddy simulation technique and FW-hnoise model. This study would be usefully to design low noise axial-low fan.
出处
《流体机械》
CSCD
北大核心
2010年第2期18-22,共5页
Fluid Machinery
基金
教育部科学研究重点项目(209070)
山东省教育厅科技计划项目(J08LB03)
关键词
大涡模拟
离散噪声
噪声源
数值模拟
large eddy simulation
discrete noise
noise source
numerical simulation
