Acoustic Modes in the Annular Duct with Uniform Mean Flow

摘要：

There are many benchmark problems in computational aeroacoustics (CAA) and acoustic mode in the annular duct with uniform mean flow is a problem of this kind. The energy relation of the duct mode is deduced from the governing equation, Euler equations in this paper. If the sound power level, angular frequency, azimuthal mode numbers and radial mode numbern are given, the acoustic mode in the annular duct can be expressed explicitly by the deduced results. The simulation of two different cases shows the propagation of a single acoustic mode in annular duct pictorially.

关键词： acoustic mode annular duct dispersion relation dispersion relation preserving

作者: Zhanxin Liu

作者单位: Department 103. Yichang Testing Technique Research Institute. No 58 Shengli 3rd Road,Yichang Hubei 443003. China

会议类型: 国际会议

会议名称: the 2011 International Conference on Key Engineering Materials(ICKEM 2011)(2011关键工程材料国际会议)

会议地点: 三亚

会议语种:英文

页码: 554-558

在线出版日期: 2011-03-25（万方平台首次上网日期，不代表论文的发表时间）