轿车外流场车轮转动时侧风效应的数值模拟研究
, PP. 147-150
Keywords: 侧风,转动车轮,数值模拟,汽车空气动力学,气动力
Abstract:
为了研究侧风条件下车辆行驶对交通安全的影响。以某轿车15模型为算例,采用了移动地面模拟轿车相对地面的运动和旋转壁面模拟车轮转动的方法,进行了侧风角分别为0、5、10、15°和30°及车轮转动和静止情况下的数值模拟。输出了车身附近和转动车轮附近的流线、纵向对称面和左方前轮的压力曲线和部分车身表面摩擦力分布情况。对比分析了各侧风状态下的侧向力系数变化情况。研究结果表明随着侧风角的增大侧向力迅速增大;转动车轮条件下的气动阻力较低,计算精度较高,基本与试验情况吻合。
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