| 汽车空调的气动噪声分析与降噪方案设计 |
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| 引用本文： | 李春花,徐鹏,赵玉垒. 汽车空调的气动噪声分析与降噪方案设计[J]. 制冷与空调(北京), 2020, 0(3): 45-49 |
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| 作者姓名： | 李春花 徐鹏 赵玉垒 |
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| 作者单位： | ;1.长城汽车股份有限公司;2.河北省汽车工程技术研究中心 |
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| 摘 要： | 利用数值仿真和试验相结合的方法,开展在研车型空调系统气动噪声的研究。运用宽频噪声源模型和计算气动声学方法(CAA),对某汽车空调系统的气动噪声进行数值模拟,得到空调内部的噪声源分布情况,仿真和试验的频谱变化趋势比较吻合,风量最大偏差为3.5%。给出优化风道型面、改变蜗舌形状、风道包裹吸声棉等降噪措施。
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| 关 键 词： | 汽车空调 噪声 仿真和试验 降噪 |
Aerodynamic noise analysis and noise reduction scheme design of vehicle air-conditioning |
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| Li Chunhua,Xu Peng,Zhao Yulei. Aerodynamic noise analysis and noise reduction scheme design of vehicle air-conditioning[J]. Refrigeration and Air-conditioning, 2020, 0(3): 45-49 |
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| Authors: | Li Chunhua Xu Peng Zhao Yulei |
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| Affiliation: | (Great Wall Motor Co.,Ltd.,Hebei Automobile Technology Research Center) |
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| Abstract: | The aerodynamic noise of the air-conditioning system of the research vehicle is studied by combining numerical simulation with experiment.The broadband noise source model and computational aeroacoustic method(CAA)are used to simulate the aerodynamic noise of a vehicle air-conditioning system.The distribution of noise sources in the air-conditioning system is obtained.The trends of spectrum variation between simulation and test are in good agreement.The maximum deviation of airflow is 3.5%.The noise reduction measures of optimizing the air duct shape,changing the structure of volute tongue,wrapping sound-absorbing cotton in the air duct are given. |
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| Keywords: | vehicle air-conditioning noise simulation and test noise reduction |
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