|
| Research of the aeroacoustic noise simulation based on transition/scale-adapt model and FW-H equation |
| Received:May 31, 2012 Revised:September 03, 2012 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201305019 |
| KeyWord:aeroacoustic noise Ffowcs Williams-Hawkings equation γ-Reθt transition model scale-adaptive model transition/separated flow mode |
| Author | Institution |
| 王丹 |
西北工业大学 航空学院, 西安 |
| 白俊强 |
西北工业大学 航空学院, 西安 |
| 黄江涛 |
西北工业大学 航空学院, 西安 ;中国空气动力研究与发展中心, 绵阳 |
| 华俊 |
中国航空研究院, 北京 |
| 董建鸿 |
中国航空工业集团公司 第一飞机设计研究院, 西安 |
|
| Hits: 2466 |
| Download times: 1676 |
| Abstract: |
| Combined the computational fluid dynamics (CFD) numerical simulation and the acoustics analogy method,the noise simulation on the multi-element airfoil of MD30P30N is presented.The CFD numerical simulation is used to compute the flow around MD30P30N multi-airfoil at the stall angle,and then the FW-H acoustics equation is combined to compute the aerodynamic noise.For giving the precise CFD result as the sound source,the scale-adaptive simulation of separate flow model which based on SST turbulent and the boundary transition simulation method which gives the coupling to γ-Reθt transition model and SST turbulent model are established.The scale-adaptive separate (SAS) flow model behaves the characters of the RANS method at the boundary layer.Based on the combination of the SAS model and the γ-Reθt transition model,the numerical simulation technique including transition and separation for the complex flow is constructed.With the RANS equation as the control equation,the full turbulent simulation through the k-ω SST model and the simulation through the γ-Reθt-SST-SAS transition model are used to compute the multi-element airfoil flow,respectively.The aerodynamic noise is computed through the FW-H equation based on the CFD solution.The results are analyzed at the aerodynamic view and the aerodynamic noise view,and several conclusions are given at the end of the paper. |
|
|
|