Application of numerical method for the research process on the identification of the aeroacoustic noise source on small axial fan
The paper describes the numerical method for the unsteady flow field and the aeroacoustic noise of a small axial fan.The prediction method is comprised of various CFD methods and acoustic analogy by using Ffowcs Williams-Hawkings equation.The tested axial fan was selected for the study in the noise characteristics of a small axial fan.Virtual anechoic room which has same size with real one was used for numerical methods.URANS and LES models were tested for the accuracy of noise prediction.For mesh dependence study,different mesh types of mesh structure were tested and an optimized mesh was selected.Calculation conditions were also studied such as time step and turbulence model for accurate noise analysis.In this paper,we got optimum analysis conditions and computational results.Numerical results were compared with measured ones.The noise source of blades-such as separation,interaction between rotating blade and separated flow,tip vortex-were also analyzed.
small fan aeroacoustic noise axial fan measurement
Shuangquan Shao Wan-Ho Jeon Gaku Minorikawa
Technical Institute of Physics and Chemistry,CAS Technical Research Lab. CEDIC Co.,Ltd,KOREA Department of Mechanical Engineering,Hosei University
国内会议
珠海
英文
296-302
2014-10-30（万方平台首次上网日期，不代表论文的发表时间）