摘要
在KD-3型低速风洞中采用1∶10的EQ1092汽车模型进行风洞测力试验;研究了对 该模型底部、车箱两侧作平整处理,装前阻风板,驾驶室与货箱间圆滑过渡等改型方案对其 气动特性的影响。结果表明,加装适当的空气动力学附加装置能有效地提高汽车的气动性能 ,加装形状合适的阻风板能降低空气阻力625 %,各附加装置的组合使EQ140汽车模型的 空气阻力系数下降119 %。
The force test is conducted for EQ1092 truck model with a scale of 1∶10 in KD-3 low speed wind tunnel. The effect of modified schedules, such as smooth treatments for bottom of the model, two sides of cargo body, assembling a front air-dam, smooth transition between cab and cargo body, on aerodynamic c haracteristics is studied. It is shown by results that assembling appropriate ae rodynamic attachments can improve effectively the aerodynamic performance of mot or vehicle, assembling a suitable shape of air-dam can reduce the drag coeffici ent by 6.25 %, the total attachment devices in EQ140 truck model can reduce the drag coefficient by 11.9 %.
出处
《汽车技术》
北大核心
2001年第6期15-18,共4页
Automobile Technology
基金
湖南省自然科学基金资助项目