Aerodynamic Drag Reduction of Simplified Vehicles in Ground Effect by Active Flow Control
In order to decrease fuel consumption of commercial vehicles,based on Large-eddy simulation,the influence of driving parameters of synthetic jets on aerodynamics drag of simplified vehicles in ground effect.The mean-time results indicate that with synthet-ic jets located at the junction of the slant and roof,flow separation could be suppressed on the slant,which could result in a smaller separation zone and aerodynamic pressure increase,so maximum drag reductions 18.55%with the driving frequency 500Hz by synthetic jets is realized.While the same-signed jets with the driving frequency from 40 to 300Hz are installed at the upper and lower of the vertical base of the body,resulting in a shorten wake region and the pressure reduction on the vertical base.
active flow control simplified vehicles drag reduction synthetic jets ground effect
Cui wenshi Han yekai Baodi Yang Zhigang
Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems Shanghai Automotive Wind Tunnel Center,Tongji University
国内会议
上海
英文
1681-1684
2017-10-24（万方平台首次上网日期，不代表论文的发表时间）