摘要
汽车风窗玻璃除霜性能对除霜格栅的形式、大小、位置及风道具体形式等多种参数都有很强的敏感度,是多参数共同作用的结果。文章在初始设计基础上,首先通过CFD分析工具,验证了口琴型前除霜格栅中间出风过小,除霜效果差的特点,通过缩短口琴型格栅靠驾驶员侧边长度,实现了中间均匀出风;通过优化侧除霜风道走向,实现了不改动造型面前提下的快速优化方案;最后对优化方案进行除霜性能测试,验证了分析与试验的吻合度,表明在项目研发阶段利用CFD分析工具可以缩短开发周期,节省开发费用,降低开发风险。
The styling, sizing, position of the defrost grille and the defrost air duct are the most important items which affect the automobile windshield defrosting performance dramatically. A vehicle defrosting system has been optimized and the performance has been validated both by CFD （ Computational Fluid Dynamics） simulation and experiment methods： the decreasing of the height of the harmonica type grille can improve the center defrost airflow uniformity distinctly; the side defrost air flow direction can be adjusted by raising up the side defrost duct without changing the styling of the in-strument panel. The defrosting performance can finally meet the GB requirement and decrease the de- velopment process time and cost.
出处
《上海汽车》
2017年第6期25-30,共6页
Shanghai Auto
