| 喷管射流流场及噪音的数值模拟 |
| |
| 引用本文： | 胡声超,鲍福廷,王中,蔡强.喷管射流流场及噪音的数值模拟[J].固体火箭技术,2011(4):436-439. |
| |
| 作者姓名： | 胡声超 鲍福廷 王中 蔡强 |
| |
| 作者单位： | 西北工业大学燃烧热结构与内流场重点实验室;西安近代化学研究所; |
| |
| 摘 要： | 利用大涡模拟(LES)对喷管超音速高温射流流场进行了三维非稳态数值模拟,根据流场的湍流特性确定声源,选取积分面,利用FW-H方程计算远场观测点的声强,最后与相关文献中的试验结果进行对比.结果表明,该方法得到的计算结果与试验结果较吻合,但由于网格限制,远场的高频声谱存在一定的误差.
|
| 关 键 词： | 喷射 气动噪音 数值模拟 大涡模拟 |
Numerical simulation of jet flow field and noise in nozzle |
| |
| HU Sheng-chao,BAO Fu-ting,WANG Zhong,CAI Qiang.Numerical simulation of jet flow field and noise in nozzle[J].Journal of Solid Rocket Technology,2011(4):436-439. |
| |
| Authors: | HU Sheng-chao BAO Fu-ting WANG Zhong CAI Qiang |
| |
| Institution: | HU Sheng-chao1,BAO Fu-ting1,WANG Zhong2,CAI Qiang1(1.Science and Technology on Combustion Internal Flow and Thermal-Structure Laboratory,Northwestern Polytechnical University,Xi'an 710072,China,2.Xi'an Modern Chemistry Research Institute,Xi'an 710065,China) |
| |
| Abstract: | This study is focused on using Large Eddy Simulation(LES) to simulate the 3-D unsteady supersonic hot jet flows.Base on turbulence characteristics,noise sources and integral surfaces are selected.The near field data are collected from the LES and then the far field noise is computed by the Ffowcs Williams-Hawkings(FW-H) surface integral method.The results show a good agreement with experimental data.But there are some deviations in the high frequency spectra due to the mesh quality. |
| |
| Keywords: | jet aerodynamic noise numerical simulation large eddy simulation(LES) |
| 本文献已被 CNKI 等数据库收录！ |
|
