| 穿孔管消声器有流声学性能的数值预测 |
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| 引用本文： | 康钟绪,郑四发,连小珉,季振林. 穿孔管消声器有流声学性能的数值预测[J]. 内燃机工程, 2011, 0(5) |
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| 作者姓名： | 康钟绪 郑四发 连小珉 季振林 |
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| 作者单位： | 清华大学汽车安全与节能国家重点实验室;哈尔滨工程大学动力与能源工程学院; |
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| 摘 要： | 应用穿孔声阻抗新模型和有流三维有限元方法,预测穿孔管消声器的传递损失,并在消声器试验台上采用双负载法测量消声器的传递损失,预测结果和试验结果吻合良好,表明穿孔声阻抗新模型适用于穿孔管消声器有流声学性能预测。穿孔管消声器传递损失结果显示,随着气流马赫数增加,消声频带有向高频段延伸的趋势,同时通过频率处和高频范围的传递损失也有明显提高。
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| 关 键 词： | 内燃机 穿孔管消声器 穿孔声阻抗 气流 传递损失 |
Numerical Prediction on Acoustic Characteristics of Perforated Tube Silencer with Flow |
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| KANG Zhong-xu,ZHENG Si-fa,LIAN Xiao-min,JI Zhen-lin. Numerical Prediction on Acoustic Characteristics of Perforated Tube Silencer with Flow[J]. Chinese Internal Combustion Engine Engineering, 2011, 0(5) |
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| Authors: | KANG Zhong-xu ZHENG Si-fa LIAN Xiao-min JI Zhen-lin |
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| Affiliation: | KANG Zhong-xu1,ZHENG Si-fa1,LIAN Xiao-min1,JI Zhen-lin2(1.State Key Laboratory of Automobile Safety and Energy,Tsinghua University,Beijing 100084,China,2.School of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China) |
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| Abstract: | The transmission loss of perforated tube silencer with flow was predicted using a new perforation acoustic impedance model and three-dimensional finite element method,and measured also by dual-load method in the silencer test bench.The results of model prediction agree with the measured well,which shows that the new perforation impedance model is suitable for the prediction of acoustic characteristics of perforated tube silencers with flow.From the transmission loss results,it can be concluded that the acou... |
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| Keywords: | IC engine perforated tube silencer perforation acoustic impedance gas flow transmission loss |
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