基于格子波尔兹曼方法的某乘用车空调系统气动噪声的直接模拟与优化

doi:10.19562/j.chinasae.qcgc.2020.08.015

汽车工程 ›› 2020, Vol. 42 ›› Issue (8): 1103-1109.doi: 10.19562/j.chinasae.qcgc.2020.08.015

基于格子波尔兹曼方法的某乘用车空调系统气动噪声的直接模拟与优化

张佳¹, 吴海波¹, 陈蒨¹, 方志云¹, 王毅刚², 余柳平³

1.上汽大众汽车有限公司产品研发部,上海 201805;
2.同济大学汽车学院,上海 201804;
3.艾克萨(上海)模拟软件技术有限公司,上海 200042

收稿日期:2018-11-18 出版日期:2020-08-25 发布日期:2020-09-24
通讯作者: 张佳,助理工程师,硕士,E-mail:zhangjia2@csvw.com。

Direct Simulation and Optimization of the Aerodynamic Noise in a Car HVAC System Based on Lattice-Boltzmann Method

Zhang Jia¹, Wu Haibo¹, Chen Qian¹, Fang Zhiyun¹, Wang Yigang², Yu Liuping³

1. Predevelopment of Product Engineering Department, Shanghai Volkswagen Automotive Co., Ltd., Shanghai 201805;
2. School of Automotive Studies, Tongji University, Shanghai 201804;
3. EXA Simulation Software Technology Co., Ltd., Shanghai 200042

Received:2018-11-18 Online:2020-08-25 Published:2020-09-24

摘要/Abstract

摘要： 针对某乘用车空调系统气动噪声偏大的问题,采用格子波尔兹曼方法直接模拟噪声,同时求解流场和声场,并与试验相结合,开展噪声与结构优化。结果表明,该方法能较为准确地计算空调系统的流场和噪声,仿真与试验声压级曲线较为相似,总声压级仅相差0.8 dB(A)。经优化,在耳点位置噪声最大降低了约2 dB(A)。研究同时发现四极子噪声在某些频域内有较大的贡献。利用格子波尔兹曼方法模拟流场和声场是计算空调管道系统气动噪声准确有效的方法。

关键词: 汽车空调系统, 气动噪声, 格子波尔兹曼方法, 直接模拟

Abstract: Aiming at the problem of loud noise in the HVAC system of a car, the lattice-Boltzmann method is adopted to directly simulate the noise and solve out the flow field and sound field, and by combining with tests the noise and structure optimization are conducted. The results show that the method adopted can accurately calculate the flow field and noise in air conditioning system, the sound pressure level curve simulated is basically similar to that by test, with only 0.8 dB(A) difference in overall sound pressure level. After optimization, the noise at ear positions reduce by 2 dB(A) at most. The study also reveals that quadrupole noise has big contribution in some frequency ranges, and using the lattice-Boltzmann method to simulate flow field and sound field is an accurate and effective way to calculate the aerodynamic noise of the duct system of HVAC.

Key words: vehicle HVAC system, aerodynamic noise, lattice-Boltzmann method, direct simulation

张佳, 吴海波, 陈蒨, 方志云, 王毅刚, 余柳平. 基于格子波尔兹曼方法的某乘用车空调系统气动噪声的直接模拟与优化[J]. 汽车工程, 2020, 42(8): 1103-1109.

Zhang Jia, Wu Haibo, Chen Qian, Fang Zhiyun, Wang Yigang, Yu Liuping. Direct Simulation and Optimization of the Aerodynamic Noise in a Car HVAC System Based on Lattice-Boltzmann Method[J]. Automotive Engineering, 2020, 42(8): 1103-1109.

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基于格子波尔兹曼方法的某乘用车空调系统气动噪声的直接模拟与优化

Direct Simulation and Optimization of the Aerodynamic Noise in a Car HVAC System Based on Lattice-Boltzmann Method

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