摘要
采用三维数值仿真的方法,研究不同车速情况下导风罩和导流板对前端进气的影响,并与前端进气整车试验结果进行对比,对仿真计算的准确性进行验证;基于仿真模型,分析导流板上开口和加长导流板改进方案对前端进气的影响。研究结果表明:前端进气量的仿真计算结果与整车试验结果吻合良好;前端进气量随车速的增加而增加;在各车速情况下,导风罩对前端进气量的影响大于导流板;在导流板上开口可以增加经过前端冷却模块的空气流量,而加长导流板在50 km/h车速下前端进气量有所减小。本文对前端进气的研究,为提高发动机冷却系统空气侧性能积累了经验,对整车前期冷却系统的开发有重要的指导意义。
CFD simulation and CWT experiment are used to study the impact of the wind scooper and guide plate on the front end airflow under different driving conditions, The data was compared with the vehicle test results to verify the accuracy of simulations. The guide plate with opening hole and the lengthened guide plate are analyzed to see the impact on the front end air flow. It showed that the simulation results are in good coincidence with the wind tunnel experiment results; The front end air flow increased with the vehicle speed; The wind scooper has larger impact on the front end airflow comparing with the guide plate＇s in different vehicle speed; Hole on the guide plate will improve the air flow; l-nger guide plate reduces air flow at 50kph driving speed. This study on the front end air flow provides experience of improving the engine cooling air side performance at the early stage of the development.
出处
《汽车电器》
2016年第11期41-44,共4页
Auto Electric Parts
关键词
前端进气
导风罩
导流板
仿真
试验
front end air flow
wind scooper
guide plate
CFD simulation
experiment
