前端过渡半径对轻型客车气动特性影响的数值模拟  

Numerical Simulation of Influence of Front Transition Radius on Light-bus Aerodynamic Characteristics

作　　者：王靖宇[1] 李庆臣[2] 王景晟[2] 胡兴军[1] 

机构地区：[1]吉林大学汽车动态模拟国家重点实验室,长春130022 [2]一汽集团技术中心,长春130011

出　　处：《重庆理工大学学报（自然科学）》2010年第1期7-12,共6页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(50805062);汽车动态模拟国家重点实验室基金项目

摘　　要：为了研究轻型客车气动特性的影响因素,以某国产轻型客车1∶5简化模型为研究对象,通过数值模拟的方法,计算前端过渡半径改变后轻型客车的气动阻力和气动升力,得到其变化规律。模拟结果表明,前端过渡半径对轻型客车的气动特性有很大影响,所以在设计过程中应通过数值模拟和风洞试验的方法确定最佳的过渡半径。计算和分析的结论可以为轻型客车的减阻研究、造型优化和新车型开发提供科学的理论依据。To research the influential factors of the aerodynamic characteristics of light bus, the 1：5 simplified model of light-bus with different front transition radius is simulated. The influencing rules of the front transition radius on light-bus aerodynamic characteristics ave achieved through the analysis of aerodynamic drag and lift. The results indicate that the front transition radius has prodigious influence on aerodynamics characteristics. The optimal radius should be confirmed by numerical simulation and wind tunnel test. The conclusions of calculation provide the theoretical foundation for styling optimization of light bus, which are very helpful to decrease aerodynamic drag, optimize styling and develop new vehicle styling.

关 键 词：轻型客车 前端过渡半径 气动特性 气动阻力 气动升力 

分 类 号：U461.1[机械工程—车辆工程]