| 某车排气系统性能的数值模拟及优化研究 |
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| 引用本文： | 郭艳茹,朱江森,陈剑.某车排气系统性能的数值模拟及优化研究[J].汽车科技,2011(5):23-26. |
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| 作者姓名： | 郭艳茹 朱江森 陈剑 |
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| 作者单位： | 合肥工业大学噪声与振动研究所; |
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| 基金项目： | 安徽省科技攻关计划重大科技专项(080102011) |
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| 摘 要： | 为提高某车发动机排气系统的消声量,建立该排气系统的有限元模型,采用三维有限元方法对该排气系统进行声学性能仿真分析,绘制传递损失曲线,发现该排气系统在试验测得的排气噪声频谱能量较高的频段消声量较小,消声性能有待改善.运用流体动力学计算软件fluent对排气系统的流场特性进行分析预测,获得压力损失预测值,以及内部流场的流速...
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| 关 键 词： | 排气系统 消声器 传递损失 空气动力学 有限元法 排气噪声 |
Numerical Analysis of Acoustic Performance and Aerodynamic Characteristics of One Muffler |
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| GUO Yan-ru,ZHU Jiang-sen,CHEN Jian.Numerical Analysis of Acoustic Performance and Aerodynamic Characteristics of One Muffler[J].Automobile Science and Technology,2011(5):23-26. |
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| Authors: | GUO Yan-ru ZHU Jiang-sen CHEN Jian |
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| Institution: | GUO Yan-ru,ZHU Jiang-sen,CHEN Jian(Institute of Sound and Vibration Research,Hefei University of Technology,Hefei 230009,China) |
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| Abstract: | In order to improve the noise attenuation performance of a muffler,a three-dimensional finite element method is implemented to assess the TL and the attenuation performance of the muffler need to be improved.The software fluent is used to simulate the aeroacoustics characteristic of the muffler and to obtain the pressure loss,flow velocity and the turbulence situation.An improvement scheme is proposed based on the results of study which acquire good effects. |
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| Keywords: | exhaust system muffler transmission loss aerodynamic FEM exhaust noise |
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