摘要
以某款MPV车型为研究对象,建立了复杂的真实整车模型,使用Fluent软件进行数值模拟。将后扰流板分为尾翼与尾翼三角板两部分,研究了其对整车气动阻力的影响。研究表明,尾翼长度小于80 mm时,加长尾翼,风阻减小;长度大于80 mm时,加长尾翼,风阻无明显变化;加大尾翼三角板,风阻明显减小。根据以上研究结果对后扰流板进行优化。数值模拟结果显示,优化后的扰流板实现降阻1.9%。然后通过风洞试验验证了优化方案的可行性。试验结果显示,优化后风阻下降2.5%。
Taking a certain MPV model as the research object, a complex real vehicle model was established, and the numerical simulation was carried out using Fluent software. The rear spoiler is divided into two parts the tail and the tail triangular plate. The influence of the aerodynamic resistance on the vehicle is studied. The results show that when the length of the tail is less than 80 mm, the tail is reduced and the wind resistance decreases. When the length is longer than 80 mm, the tail fin and the wind resistance are not changed obviously. Based on the above results, the rear spoiler is optimized. The numerical simulation results show that the resistance decreases by 1.9% after optimizing. Then feasibility of the optimization scheme is verified by wind tunnel test. The results show that the resistance decreases by 2.5% after optimizing.
出处
《农业装备与车辆工程》
2018年第2期33-36,共4页
Agricultural Equipment & Vehicle Engineering
关键词
MPV
气动阻力
后扰流板
数值模拟
风洞试验
MPV
aerodynamic drag
rear spoiler
numerical simulation
wind tunnel test
