The Drag Related Flow Field Characteristics of Trucks and Buses
The Drag Related Flow Field Characteristics of Trucks and Buses
复制标题
卡车和客车的阻力相关流场特性
DOI：
10.1007/978-1-4684-8434-2_3
复制
发表时间：
1978
影响因子：
1.8
通讯作者：
P. Beebe
中科院分区：
文献类型：
--
作者：
W. Mason;P. Beebe
非空气动力学因素在很大程度上决定了当代卡车和公共汽车的尺寸和形状。1/7比例的拖拉机拖车和巴士模型的风洞实验的结果被用来识别流场的主要阻力产生区域，并记录一些详细的特性。为了探索减阻的实际潜力，对前体和底部流场进行了一些修改。最大的阻力减少被证明是可以通过改变前体流场。通过改变机身外形或采用附加装置来控制前缘的气流分离，确定了最小阻力极限。分析了在现有约束条件下实现更低阻力水平的可能性。最后对非零偏航阻力特性进行了简要的讨论。
Non-aerodynamic factors are largely responsible for the size and shape of contemporary trucks and buses. The results of wind tunnel experiments with 1/7-scale tractor-trailer and bus models are used to identify major drag producing regions of the flow fields, and to document some of the detailed characteristics. Some modifications of both the forebody and base flow fields are made in order to explore the practical potential for drag reduction. The largest drag reductions are shown to be achievable by changing the forebody flow field. By controlling flow separation from leading edges, either by modifying body contours or by employing add-on devices, apparent minimum drag limits have been identified. The possibility of even lower drag levels within existing constraints is analyzed. At the end, non-zero yaw drag characteristics are briefly discussed.