| 可旋转径向式微粒捕集器消声特性影响因素灰色关联分析 |
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| 引用本文： | 龚金科,田婵,王曙辉,陈韬,左青松,官庆武,刘恒语.可旋转径向式微粒捕集器消声特性影响因素灰色关联分析[J].环境工程学报,2013,7(2):643-648. |
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| 作者姓名： | 龚金科 田婵 王曙辉 陈韬 左青松 官庆武 刘恒语 |
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| 作者单位： | 1. 湖南大学汽车车身先进设计制造国家重点实验室,长沙410082;湖南大学机械与运载工程学院,长沙410082
2. 湖南大学机械与运载工程学院,长沙,410082 |
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| 基金项目： | 国家自然科学基金(51276056,51176045);湖南大学汽车车身先进设计制造重点实验室自主课题(61075002) |
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| 摘 要： | 为降低可旋转径向式微粒捕集器中的排气噪声,采用有限元法建立可旋转径向式微粒捕集器声学特性模型,分析得到了其消声特性和传递损失曲线,并采用灰色关联分析方法研究可旋转径向式微粒捕集器结构参数对消声特性的影响程度。结果表明,可旋转径向式微粒捕集器具有降噪能力,且对高频噪声消声效果明显好于低频噪声,平均消声量为20 dB左右;直径比和扩张管锥角是影响可旋转径向式微粒捕集器消声特性的2个主要因素,适当选用小的直径比和扩张管锥角,有利于提高可旋转径向式微粒捕集器的消声性能。
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| 关 键 词： | 微粒捕集器 消声特性 灰色关联分析 传递损失 结构参数 |
Grey relational analysis on influencing factors of muffling characteristic in a radial rotatable diesel particulate filter |
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| Gong Jinke,Tian Chan,Wang Shuhui,Chen Tao,Zuo Qingsong,Guan Qingwu and Liu Hengyu.Grey relational analysis on influencing factors of muffling characteristic in a radial rotatable diesel particulate filter[J].Techniques and Equipment for Environmental Pollution Control,2013,7(2):643-648. |
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| Authors: | Gong Jinke Tian Chan Wang Shuhui Chen Tao Zuo Qingsong Guan Qingwu and Liu Hengyu |
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| Institution: | 1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China;2. College of Mechanical and Vehicle Engineering, Hunan University,Changsha 410082, China;2. College of Mechanical and Vehicle Engineering, Hunan University,Changsha 410082, China;2. College of Mechanical and Vehicle Engineering, Hunan University,Changsha 410082, China;2. College of Mechanical and Vehicle Engineering, Hunan University,Changsha 410082, China;2. College of Mechanical and Vehicle Engineering, Hunan University,Changsha 410082, China;2. College of Mechanical and Vehicle Engineering, Hunan University,Changsha 410082, China;2. College of Mechanical and Vehicle Engineering, Hunan University,Changsha 410082, China |
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| Abstract: | For reducing the exhaust noise in a radial rotatable diesel particulate filter (DPF), the finite element method was applied to establish the acoustic model. Depending on the model, muffling characteristics and transmission loss curve were gotten. By grey relational analysis, the effects of structure parameters on muffling characteristics in the radial rotatable diesel particulate filter were studied. The result indicated that the radial rotatable diesel particulate filter was capable of muffling. And the high frequency muffling effect, which the average magnitude was about 20 dB, was obviously stronger than the low one. The result also showed that diameter ratio and the expansion cone angle were two major influencing factors of muffling characteristics in radial rotatable diesel particulate filter. It helps to improve the muffling ability by using the smaller value of each factor. |
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| Keywords: | diesel particulate filter muffling characteristic grey relational analysis transmission loss structure parameters |
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