外部改型对乘用车减阻效果的数值模拟研究

IF 1 Q4 ENGINEERING, MECHANICAL

International Journal of Automotive and Mechanical Engineering Pub Date : 2022-03-28 DOI:10.15282/ijame.19.1.2022.19.0738

Mostofa Sadat, Nayef Albab, Faria Chowdhury, Mohammad Muhshin Aziz Khan

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引用次数: 1

摘要

本文采用数值模拟的方法，考察了外部改型对减小乘用车气动阻力的影响。在模拟过程中，修改包括通过用摄像头替换侧后视镜和覆盖车轮区域来缩小后视镜的尺寸。不同改装组合的阻力变化与传统的基线模型进行了比较，以确定最符合空气动力学的配置。研究发现，侧视摄像头减少了近2.6%的阻力，因为它们的前部面积更小，并且改善了车辆的整体空气动力学。此外，车轮覆盖面积的增加减少了阻力，导致87%覆盖面积的车轮阻力减少了2.7%。这是因为减少尾迹形成引起的轮辋。最后，采用更小的摄像头和更大覆盖范围的车轮组合，最大减少了约4.3%的阻力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Numerical Simulation Approach to Investigate the Effects of External Modifications in Reducing Aerodynamic Drag on Passenger Vehicles

This study used a numerical simulation approach to examine the effects of external modifications in reducing aerodynamic drag on passenger vehicles. During the simulation, modifications included reducing mirror size by replacing the side mirrors with cameras and covering the wheel area. The resulting changes in drag force for different combinations of modifications were compared with a conventional baseline model to determine the most aerodynamic configuration. The study found that side view cameras reduced drag forces by almost 2.6% due to their smaller frontal areas and improvement in the overall aerodynamics of the vehicle. Besides, an increase in wheel coverage decreased the drag causing up to 2.7% of drag force reduction for a wheel with an 87% coverage area. This is because of the reduction in wake formation caused by the wheel rims. Finally, using a combination of smaller cameras and wheels with larger coverage areas resulted in a maximum drag reduction of about 4.3%.

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来源期刊

International Journal of Automotive and Mechanical Engineering ENGINEERING, MECHANICAL-

CiteScore

2.40

自引率

10.00%

发文量

审稿时长

20 weeks

期刊介绍： The IJAME provides the forum for high-quality research communications and addresses all aspects of original experimental information based on theory and their applications. This journal welcomes all contributions from those who wish to report on new developments in automotive and mechanical engineering fields within the following scopes. -Engine/Emission Technology Automobile Body and Safety- Vehicle Dynamics- Automotive Electronics- Alternative Energy- Energy Conversion- Fuels and Lubricants - Combustion and Reacting Flows- New and Renewable Energy Technologies- Automotive Electrical Systems- Automotive Materials- Automotive Transmission- Automotive Pollution and Control- Vehicle Maintenance- Intelligent Vehicle/Transportation Systems- Fuel Cell, Hybrid, Electrical Vehicle and Other Fields of Automotive Engineering- Engineering Management /TQM- Heat and Mass Transfer- Fluid and Thermal Engineering- CAE/FEA/CAD/CFD- Engineering Mechanics- Modeling and Simulation- Metallurgy/ Materials Engineering- Applied Mechanics- Thermodynamics- Agricultural Machinery and Equipment- Mechatronics- Automatic Control- Multidisciplinary design and optimization - Fluid Mechanics and Dynamics- Thermal-Fluids Machinery- Experimental and Computational Mechanics - Measurement and Instrumentation- HVAC- Manufacturing Systems- Materials Processing- Noise and Vibration- Composite and Polymer Materials- Biomechanical Engineering- Fatigue and Fracture Mechanics- Machine Components design- Gas Turbine- Power Plant Engineering- Artificial Intelligent/Neural Network- Robotic Systems- Solar Energy- Powder Metallurgy and Metal Ceramics- Discrete Systems- Non-linear Analysis- Structural Analysis- Tribology- Engineering Materials- Mechanical Systems and Technology- Pneumatic and Hydraulic Systems - Failure Analysis- Any other related topics.