Scholarlink

<p>Vehicle aerodynamics can have a considerable impact on energy consumption. We show that wind can make a significant contribution to aerodynamic drag and present a methodology to capture drag over the entire operating range of vehicle speed, wind speed, and wind direction. The approach entails performing a 2D aerodynamic characterization of the vehicle by computational fluid dynamics (CFD) and/or experimental methods, modeling the 2D aerodynamic force in the presence of wind, and calculating the longitudinal component of that force. The relationships developed facilitate the real-time estimation of drag in the presence of wind, and the general methodology is applicable to streamlined vehicle design over the entire operating range of yaw. Wind-affected aerodynamic drag calculations show that the aerodynamic power loss is strongly dependent on wind direction and, in certain cases, wind could more than double the loss. In a vehicle simulation study estimating the relative contributions of several inputs on consumption, road grade, ambient temperature extremes, and windy conditions were found to be the most important influencing factors.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Estimation of the Impact of Wind on Vehicle Energy Consumption in Battery Electric Vehicles

  • 期刊论文

  • 发表日期：

    2025年10月10日

查看全文
  • Vivek A. Jairazbhoy

摘要

Vehicle aerodynamics can have a considerable impact on energy consumption. We show that wind can make a significant contribution to aerodynamic drag and present a methodology to capture drag over the entire operating range of vehicle speed, wind speed, and wind direction. The approach entails performing a 2D aerodynamic characterization of the vehicle by computational fluid dynamics (CFD) and/or experimental methods, modeling the 2D aerodynamic force in the presence of wind, and calculating the longitudinal component of that force. The relationships developed facilitate the real-time estimation of drag in the presence of wind, and the general methodology is applicable to streamlined vehicle design over the entire operating range of yaw. Wind-affected aerodynamic drag calculations show that the aerodynamic power loss is strongly dependent on wind direction and, in certain cases, wind could more than double the loss. In a vehicle simulation study estimating the relative contributions of several inputs on consumption, road grade, ambient temperature extremes, and windy conditions were found to be the most important influencing factors.