某轿车前挡风玻璃除霜模型建立及性能仿真研究

The Analysis and Experiment for Automotive Defrost System Performance of a Car's Front Windshield

针对新上市的某车型,根据霜的形成原理,建立该车除霜系统物理模型和数学模型,利用CFD软件成功模拟了该车前挡风玻璃的稳态速度流场,以及除霜瞬态过程中的物理现象。分析发现该车型前挡风玻璃除霜系统压力损失大,风道各出口流量比例不合理,存在速度死区。提出了改进的建议,仿真模拟表明,新方案更加融霜的气流分布更加的均匀。

For certain models of the new listings, according to the frost forming principle, established physical and mathematical models of the car defrost system using CFD software, successfully simulated the car windshield before the steady-state speed of the flow field, as well as defrost pressure loss, the simulation benefits. in the process of physical phenomena. Analysis showed that the model front windshield defrost system the export of the duct flow ratio is irrational, there is speed deadband. The paper put forward suggestions for improvement, showed that the new program is more defrost air distribution is more uniform, with a certain degree of social and economic benefits.