| 锯齿形翅片对喷管流动及噪声特性的影响分析 |
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| 引用本文： | 汤涛,谈力成,张会生.锯齿形翅片对喷管流动及噪声特性的影响分析[J].装备环境工程,2011,8(3):90-93. |
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| 作者姓名： | 汤涛 谈力成 张会生 |
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| 作者单位： | 上海交通大学，上海，200240 |
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| 摘 要： | 喷注噪声理论表明,改变喷口形状会使喷注噪声发生改变.针对发动机排气系统,设计了锥型啧管及锯齿形出口的锥形喷管,建立相应的喷注射流模型,利用数值手段对2种喷管进行啧注流场分析和噪声预测,研究锯齿形翅片对流动和噪声特性带来的影响.
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| 关 键 词： | 锥型喷管 锯齿形翅片 流动特性 射流噪声 数值计算 |
| 收稿时间： | 2010/12/16 0:00:00 |
| 修稿时间： | 2011/6/15 0:00:00 |
Analysis on Effect of Serrated Fin on the Flowing and Noise Performance of Exhaust Nozzle |
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| TANG Tao,TAN Li-cheng and ZHANG Hui-sheng.Analysis on Effect of Serrated Fin on the Flowing and Noise Performance of Exhaust Nozzle[J].Equipment Environmental Engineering,2011,8(3):90-93. |
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| Authors: | TANG Tao TAN Li-cheng and ZHANG Hui-sheng |
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| Institution: | TANG Tao,TAN Li-cheng,ZHANG Hui-sheng(Shanghai Jiaotong University,Shanghai 200240,China) |
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| Abstract: | Lighthill theory showed that jet noise will change as the shape of the nozzle changed.Conical nozzle and chevron nozzle were designed based on engine exhaust system.The relevant jet flow models were established.Flow analysis and noise prediction of the two kinds of nozzle were carried out with numerical simulation method.Numerical simulation showed that the new nozzles will bring some noise suppression. |
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| Keywords: | conical nozzle serrated fin flow performance jet noise numerical simulation |
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