天然气汇管噪声数值模拟及降噪分析
Numerical Simulation and Noise Reduction Analysis of Natural Gas Manifold Noise
孙文 1张伟 1闫鑫豪1
作者信息
- 1. 西安石油大学机械工程学院(陕西 西安 710065)
- 折叠
摘要
针对天然气汇管在高压气流作用下产生的气动噪声问题,采用计算流体动力学CFD软件与声学软件耦合的方法进行数值模拟,研究天然气汇管的噪声特性,并评估多孔材料包裹的降噪效果.通过对流场进行计算,导入流体数据作为激励在Virtual.Lab Acoustics中进行声场计算,模拟噪声场分布.引入多孔材料模型,通过改变流阻、厚度和密度等参数,分析了多孔材料对降噪性能的影响.结果表明,在200～2 000 Hz的频率范围内,多孔材料包裹具有良好的降噪效果.通过对不同参数的分析比较,为实际工程中多孔材料的选择提供借鉴.
Abstract
Aiming at the aerodynamic noise of natural gas manifold under the action of high pressure air flow,the method of coupling computational fluid dynamics(CFD)and acoustic software was used to conduct numerical simulation to study the noise characteristics of natural gas manifold and evaluate the noise reduction effect of porous material encapsulation.Through the calculation of the flow field,the fluid data were imported as excitation for the sound field calculation in Virtual.Lab Acoustics to simulate the noise field dis-tribution.By the introduction of porous material model,the influence of porous material on the noise reduction performance was ana-lyzed by changing the flow resistance,thickness and density.The results show that in the frequency range of 200～2 000 Hz,the po-rous material has a good noise reduction effect.Through the analysis and comparison of different parameters,it provides guidance for the selection of porous materials in practical engineering.
关键词
汇管/气动噪声/数值模拟/多孔材料/降噪Key words
manifold/aerodynamic noise/numerical simulation/porous material/noise reduction引用本文复制引用
出版年
2025
NETL
NSTL
万方数据