Design of Noise Reduction Structure at Inlet End of Local Axial Flow Fan and Simulation of Flow Field
In order to further explore the noise reduction strategy of local axial flow fan,this paper takes the problem of high noise of local axial flow fan of a coal mine enterprise as a case study.First,combined with the structure of the inlet of the local axial flow fan,after comprehensive research,the radial annular air intake method is determined to design,and the noise reduction structure and model parameters of the inlet end are determined.Secondly,a simulation analysis model is established based on the structural parameters,and the air flow field characteristics of the local axial flow fan under different operating conditions are simulated and analyzed,so as to clarify the characteristics of its pressure,velocity and eddy current.Finally,it is discussed according to the simulation analysis results.The results show that the inlet end resistance loss is relatively small,the velocity distribution of the flow field is relatively uniform,and the eddy current in the air flow field is also relatively small,which indicates that the structure has potential application value.
local axial flow fannoise reduction structureflow field analysissimulation analysis
NETL
NSTL
万方数据
