| 一种新型消声器的设计和试验研究 |
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| 引用本文： | 张文平,柳贡民,田华安,张新玉,季振林.一种新型消声器的设计和试验研究[J].哈尔滨工程大学学报,2004,25(5):627-630. |
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| 作者姓名： | 张文平 柳贡民 田华安 张新玉 季振林 |
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| 作者单位： | 哈尔滨工程大学,动力与核能工程学院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 针对某型柴油机排气噪声频谱特性,设计了一种新型阻抗复合式排气消声器.采用流体计算软件Fluent对消声器的阻力损失进行了仿真计算,提出了减少阻力损失的方案,用声学软件SYSNOISE中的有限元法对传递损失进行了仿真计算,并对该消声器模拟样器在无气流状态下的声学性能进行了试验研究.理论与实验结果均表明,所设计的排气消声器在柴油机排气噪声需考虑的频带内,消声量可达25dB(A).
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| 关 键 词： | 排气消声器 插入损失 传递损失 有限元法 柴油机 |
| 文章编号： | 1006-7043(2004)05-0627-04 |
| 修稿时间： | 2003年9月15日 |
Design and experimental study of new type of exhaust silencer |
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| ZHANG Wen-ping,LIU Gong-min,TIAN Hua-an,ZHANG Xin-yu,JI Zhen-lin.Design and experimental study of new type of exhaust silencer[J].Journal of Harbin Engineering University,2004,25(5):627-630. |
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| Authors: | ZHANG Wen-ping LIU Gong-min TIAN Hua-an ZHANG Xin-yu JI Zhen-lin |
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| Abstract: | The design process of a new type of exhaust silencer for some diesel engine models was discussed.Pressure loss of the muffler was emulated and calculated with FLUENT software, and the scheme with less pressure loss was brought forward. The silencer's transmission loss was also calculated with acoustical software SYSNOISE which carried on the finite element method. Finally an experiment was done to measure the silencer's inserting loss in condition without airflow.The results of emulation and experiment shows that in the whole frequencies considered of the diesel engine, this design can achieve the acoustic reduction of 25dB(A). |
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| Keywords: | exhaust silencer insert loss transmission loss finite element method diesel engine |
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