【作者】 张英朝； 姜晴雯； 弓宏宇； 王国华； 张喆；

【Author】 ZHANG Yingchao;JIANG Qingwen;GONG Hongyu;WANG Guohua;SHEN chun;ZHANG Zhe;Jilin University, State Key Laboratory of Automotive Simulation and Control;

【机构】 吉林大学汽车仿真与控制国家重点研究室；

【摘要】 本文以方程式赛车为研究对象,通过模拟探究其尾翼和车身气动特性的相互影响作用。尾翼位置向下平移0.1m、向后平移0.5m后车身后部的升力相较于其仅向下平移时得到改善,同时使扩散器及底板的下压力得到大幅提升,最终使整车下压力和升阻比相对最优。研究车身对尾翼的影响,由于车身后部的收缩产生下洗气流,下洗作用在车身两侧逐渐减弱。通过将尾翼中间位置抬高,形成具有三维形状的尾翼,可以改善其中间截面的压力分布,提高尾翼的下压力。更多还原

【Abstract】 Through simulation, the research of aerodynamic characteristic interaction between rear wing and the body is based on Formula cars. The lift force at the rear of vehicle is improved when the rear wing moves to 0.1m downwards and 0.5m backwards, comparing to 0.1 downwards position. And the downforce of the diffuser and floor is greatly increased, which make the downforce and lift-drag ratio the best. The aerodynamic influence of the body on the rear wing was studied. Since the contraction of the rear of body produce downwash airflow, and the downwash gets weakened at sides. By raising the middle position of the rear wing to form a three-dimensional shape, the pressure distribution of the middle section can be improved and the downforce of the rear wing can be increased.更多还原