| Three-dimensional aeroacoustic numerical simulation of flow induced noise of mufflers | |
Yang Y(杨焱) ; Sun HL; Yang, Y. ([email protected])
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| Source Publication | Communications in Computer and Information Science |
| 2014 | |
| Conference Name | 26th International Conference on Parallel Computational Fluid Dynamics, ParCFD 2013 |
| Conference Date | May 20, 2013 - May 24, 2013 |
| Conference Place | Changsha, China |
| Abstract | Mufflers are widely applied in industrial flow duct systems or internal combustion engines, to reduce the amount of noise carried by the upstream flow. Although the flow in the duct of the muffler is commonly unsteady, complex and turbulent, which generates noise by itself. The flow noise should be considered for design and optimization of the muffler. By means of a three-dimensional numerical simulation integrated CFD (computational fluid dynamics) and CAA (computational aeroacoustics), the paper investigated two typical mufflers. The first one has an expanded chamber in the duct, and the second one has the same chamber but whilst has a perforated wall between the duct and the chamber. The nonlinear acoustic solver is implemented to model noise generation and transmission from an initial statistically-steady turbulent flow, which provided by RANS (Reynolds-averaged Navier-Stokes) simulation, and to simulate the noise in near field. The radiated far-field noise of the mufflers was predicted by FW-H (Ffowcs Williams-Hawking) acoustic analogy. The mechanisms of the vortex and sound generation were revealed, and results indicate that the perforated tube muffler has much lower flow induced noise level. The solver of the numerical simulation has been parallelized with MPI, and run on a HPC cluster, due to the large computation cost. © Springer-Verlag Berlin Heidelberg 2014. |
| Keyword | Cfd (Computational Fluid Dynamics) Computation Costs Computational Aeroacoustics (Caa) Design And Optimization Flow Induced Noise Non-linear Acoustics Reynolds-averaged Navier-stokes Three-dimensional Numerical Simulations |
| Department | LHD气动布局优化与计算方法 |
| ISBN | 9783642539619 |
| URL | 查看原文 |
| Indexed By | EI |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/60223 |
| Collection | 高温气体动力学国家重点实验室 |
| Corresponding Author | Yang, Y. ([email protected]) |
| Recommended Citation GB/T 7714 | Yang Y,Sun HL,Yang, Y. . Three-dimensional aeroacoustic numerical simulation of flow induced noise of mufflers[C]Communications in Computer and Information Science,2014. |
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| File Name/Size | DocType | Version | Access | License | ||
| Cp2014-030.pdf（1696KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Download | ||
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