A CFD study of the aerodynamic characteristics of a DrivAer fastback model

IF 5.8 1区工程技术 Q1 ENGINEERING, AEROSPACE

Aerospace Science and Technology Pub Date : 2025-10-03 DOI:10.1016/j.ast.2025.111043

Thanh-Long Le , Thanh-Phuc Phan , Duc Tran , Viet-Thang Vu , Le-Hung-Toan Do

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引用次数: 0

Abstract

This study focuses on improving the aerodynamic performance of a passenger vehicle by incorporating an aerodynamic add-on device. Specifically, a cambered rear wing based on the NACA 8612 airfoil is mounted at the rear of the DrivAer fastback model to enhance its aerodynamic characteristics. Then, the computational fluid dynamics (CFD) approach is employed to investigate the fluid dynamic behavior and evaluate the aerodynamic performance improvements resulting from the rear wing installation. The analysis also examines the effects of operational conditions and wing configuration parameters, such as freestream velocities, mounting heights, and angles, on the drag and lift coefficients. Numerical simulation results reveal that applying a rear wing with a configuration of a/b = 0.8 and α = 5° at a vehicle speed of 30 m/s leads to a significant improvement in aerodynamic stability compared to the original model, as evidenced by the reduction in the lift area coefficient from 0.291 to -0.124, at the cost of a slight drag area coefficient increase from 0.503 to 0.515. Overall, the findings in this study aim to contribute to a deeper understanding of how aerodynamic add-on devices influence a vehicle’s aerodynamic performance. In particular, the analysis of various wing configuration parameters offers valuable insights for the development of active aerodynamic control systems, particularly in designing effective control strategies.

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基于CFD的驾驶员快背模型气动特性研究

本研究的重点是通过加入空气动力学附加装置来改善乘用车的空气动力学性能。具体来说，基于NACA 8612翼型的弧形尾翼安装在驾驶员快背模型的后部，以增强其空气动力学特性。然后，采用计算流体动力学（CFD）方法对尾翼安装后的气动性能进行了分析和评价。分析还考察了操作条件和机翼配置参数（如自由流速度、安装高度和角度）对阻力和升力系数的影响。数值模拟结果表明，在车速为30 m/s时，采用a/b = 0.8、α = 5°的尾翼构型，与原模型相比，气动稳定性得到了显著改善，升力面积系数从0.291降低到-0.124，阻力面积系数从0.503略微增加到0.515。总的来说，本研究的结果旨在有助于更深入地了解空气动力学附加装置如何影响车辆的空气动力学性能。特别是，对各种机翼构型参数的分析为主动气动控制系统的开发提供了宝贵的见解，特别是在设计有效的控制策略方面。

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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来源期刊

Aerospace Science and Technology 工程技术-工程：宇航

CiteScore

10.30

自引率

28.60%

发文量

654

审稿时长

54 days

期刊介绍： Aerospace Science and Technology publishes articles of outstanding scientific quality. Each article is reviewed by two referees. The journal welcomes papers from a wide range of countries. This journal publishes original papers, review articles and short communications related to all fields of aerospace research, fundamental and applied, potential applications of which are clearly related to: • The design and the manufacture of aircraft, helicopters, missiles, launchers and satellites • The control of their environment • The study of various systems they are involved in, as supports or as targets. Authors are invited to submit papers on new advances in the following topics to aerospace applications: • Fluid dynamics • Energetics and propulsion • Materials and structures • Flight mechanics • Navigation, guidance and control • Acoustics • Optics • Electromagnetism and radar • Signal and image processing • Information processing • Data fusion • Decision aid • Human behaviour • Robotics and intelligent systems • Complex system engineering. Etc.