基于Fluent汽车后视镜后整流降噪降阻仿真分析  

Simulation Analysis of Noise and Drag Reduction through Rectification of Car Rearview Mirrors Based on Fluent

作　　者：周欣宇 鄂江将 单晨晨 耿直 马遥力 马震宇[2] ZHOU Xinyu;E Jiangjiang;SHAN Chenchen;GENG Zhi;MA Yaoli;MA Zhenyu(School of Aerospace engineering,Zhengzhou University of Aeronautics,Zhengzhou 450046,China;School of Aeroengine,Zhengzhou University of Aeronautics,Zhengzhou 450046,China;Innovation and Entrepreneurship Center,Zhengzhou University of Aeronautics,Zhengzhou 450046,China)

机构地区：[1]郑州航空工业管理学院航空宇航学院,郑州450046 [2]郑州航空工业管理学院航空发动机学院,郑州450046 [3]郑州航空工业管理学院双创中心,郑州450046

出　　处：《机电技术》2024年第6期27-31,共5页Mechanical & Electrical Technology

基　　金：河南省科技攻关计划项目(242102240053);河南省研究生教育改革与质量提升工程项目(YJS2024JD47)。

摘　　要：节能减排与噪声控制是工程和生活领域的重要研究问题。文章针对降低行车气动噪声和提升司乘人员舒适度,提出汽车后视镜外形的一种改进方案,增加透明后整流罩。文章基于Fluent流体力学软件对缩比汽车模型空气流场进行数值计算,仿真分析结果表明:改进后的后视镜产生的尾流气动噪声明显小于改进前,同时高速行驶时汽车气动阻力也略有减小,后视镜后整流对于降低汽车行驶气动噪声比降阻更为主要。Energy conservation,emission reduction,and noise control have become important research topics in the fields of engineering and daily life.In order to reduce aerodynamic noise during driving and improve the comfort of drivers and passengers,the improved plan have been proposed for the appearance of car rearview mirrors,namely,adding the transparent rear fairings.The Fluent fluid software was used to simulate the flow field of a scaled car model.The results showed that the wake noise generated by the rearview mirrors was significantly lower than that before the improvement.At the same time,the aerodynamic drag of the car during high-speed driving was slightly reduced.The rearview mirror rectification is more important in reducing aerodynamic noise during car operation than reducing the resistance.

关 键 词：汽车后视镜 后整流罩 气动噪声 气动阻力 数值仿真 Fluent软件 

分 类 号：U463.856[机械工程—车辆工程]