针对贯流风扇气动噪声传播特性,采用基于非结构网格的CE/SE算法对其气动流场进行数值模拟,并模拟了气动噪声的传播.湍流模拟采用大涡模型,搭接式滑移网格模型处理动静干涉.噪声传播采用完全欧拉方程作为控制方程,远场采用无反射边界条件.将使用该方法得到的远场噪声频谱与实验数据进行对比分析,结果表明与实验测量得到宽带频谱不同,采用大涡模拟湍流模型进行声源模拟时,会加强部分离散频率上的声级,从而产生误差.
参考文献
| [1] | Foluso Ladeinde;Xiaodan Cai .Application of DRP and Compact Schemes to Computational Aeroacoustics on Curvilinear Meshes.[AIAA 2000-2330][R]. |
| [2] | Min LIU,Keqi WU.Aerodynamic Noise Propagation Simulation using Immersed Boundary Method and Finite Volume Optimized Prefactored Compact Scheme[J].热科学学报（英文版）,2008(04):361-367. |
| [3] | Yong Cho;Young J.Moon .Discrete Noise Prediction of Variable Pitch Cross-Flow Fans by Unsteady Navier-Stokes Computations[J].Journal of Fluids Engineering: Transactions of the ASME,2003(3):543-550. |
| [4] | Rai M M .Navier Stokes Simulation of Rotor/Stator Interaction using Patched and Overlaid Grids[J].Journal of Propulsion and Power,2005,3:387-1987. |
| [5] | Sanjay;Mathur .Unsteady Flow Simulations Using Unstructured Sliding Meshes [AIAA 94-2333][R].,1994. |
| [6] | Chang S C .Courant Number Insensitive CE/SE Method [AIAA Paper 2002-3890][R].,2002. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%