Effects of Crosswind on an Automobile Under Dynamic Conditions

作     者：Gemunu WEERATHUNGA Iresha U ATTHANAYAKE SD Rasika PERERA 

作者机构：Department of Mechanical EngineeringThe Open University of Sri LankaNawalaNugegodaSri Lanka 

出 版 物：《Instrumentation》 (仪器仪表学报（英文版）)

年 卷 期：2021年第8卷第2期

页      面：14-21页

学科分类：082304[工学-载运工具运用工程] 08[工学] 080204[工学-车辆工程] 0802[工学-机械工程] 0823[工学-交通运输工程] 

主　　题：Pressure Coefficient Aero-dynamic Behavior Overtaking Vehicles 

摘      要：This paper presents results of a series of experiments carried out on models of a car and a truck in a wind tunnel to observe the pressure coefficient variation when the truck was overtaken by the ***,conventional wind tunnels are not equipped to measure the yaw moment and side force created due to pressure difference created as a result of the interaction of two vehicles and the cross *** additional attachment for the wind tunnel was designed and built to measure the yawing moment and the side force experienced by the car when the cross wind is *** attachment consists of atop platewhich is independent from the wind tunnel frame and free to *** car model is fixed to thetop platethe top plate is connected to the base plate via a load measuring shaft which is connected to load cells that enable to measure the yaw *** pressure coefficient variation was measured by a series of pressure tapings provided by the circumference of the *** two models were tested independently in the wind tunnel for their pressure coefficient *** was found that the pressure coefficient around the car varies substantially when it is overtaking the *** was also observed that when the cross wind is applied the yawing moment and the side force on the car increases with the air *** attachment was calibrated prior to the investigation and have been able to obtain consistent *** relate the observations to real world conditions,further investigations are necessary.