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基于FLUENT的不同喷管形状喷流噪声分析 被引量:3

Noise Analysis of Different Opening Nozzle Model Based on FLUENT
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摘要 通过简化发动机喷口模型,研究喷管的喷口形状改变后对喷气噪声的影响,针对三种模型,即普通、三角形锯齿以及半圆形锯齿喷管,通过FLUENT软件进行计算分析,并将计算得到的流场以及监测点的声压级进行比较,结果表明,锯齿形尾喷口形状对降低排气噪声较为理想,在最小程度影响出口速度的情况下能减少排气噪声2~6 dB。 In this paper,the central work is to calculate and analyze the exhaust noise through changing the shape of the tailing spout,use computational fluid dynamics means by FLUENT to calculate and mesh different models,and compare all the results.In the end,the conclusion is the triangular nozzle model is perfect,it can reduce the noise by 2 ~ 6 dB.
作者 蒋峰 马建敏
出处 《航空计算技术》 2013年第3期41-44,共4页 Aeronautical Computing Technique
基金 上海市经委项目资助(产-36-专项-1)
关键词 发动机 尾喷口形状 噪声 FLUENT engine tailing spout noise FLUENT
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