| 引用本文: | 辛俐,胡兴军,高炳钊,刘江,曹杰汛.驻车通风对汽车除霜性能的影响[J].哈尔滨工业大学学报,2019,51(1):184.DOI:10.11918/j.issn.0367-6234.201803121 |
| XIN Li,HU Xingjun,GAO Bingzhao,LIU Jiang,CAO Jiexun.Influence of parked car ventilation parameters on defrost performance[J].Journal of Harbin Institute of Technology,2019,51(1):184.DOI:10.11918/j.issn.0367-6234.201803121 |
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| 驻车通风对汽车除霜性能的影响 |
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辛俐1,胡兴军1,2,高炳钊1,2,刘江1,曹杰汛3
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(1. 吉林大学 汽车工程学院,长春130022;2. 汽车仿真与控制国家重点实验室(吉林大学),长春130022; 3. 东风日产乘用车技术中心,广州,510800)
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| 摘要: |
| 驻车通风可加速前风窗玻璃降温和车内除湿,能够有效改善汽车的除霜性能,本文基于CFD方法,采用Realizable k–ε湍流模型,对汽车前风窗降温及车内除湿性能进行了研究. 首先,利用简化模型试验来验证仿真方法的准确性,并证明驻车通风能有效预防车窗内表面结霜；然后对驾驶室模型的驻车通风过程进行仿真,获得了通风参数、降温除湿效果、流场结构之间的关系. 结果表明:各通风参数中,除霜气流流量对前风窗玻璃的降温影响最大；在大流量除霜气流的基础上,全开吹脸风门并使其气流方向向上偏转,有利于促进气流的混合和排出. |
| 关键词: 驻车通风 前风窗降温 驾驶室除湿 除霜 通风参数 |
| DOI：10.11918/j.issn.0367-6234.201803121 |
| 分类号:U461.1 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(51705190) |
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| Influence of parked car ventilation parameters on defrost performance |
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XIN Li1,HU Xingjun1,2,GAO Bingzhao1,2,LIU Jiang1,CAO Jiexun3
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(1. College of Automotive Engineering(Jilin University), Changchun 130022, China; 2. State Key Laboratory of Automobile Simulation and Control(Jilin University), Changchun 130022, China; 3. Dongfeng Nissan Technical Center, Guangzhou 510800,China)
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| Abstract: |
| Parked car ventilation reduces the cooling time of the front windshield, improves the efficiency of the dehumidification in the cabin and effectively improves the defrosting performance of the windshield. Based on the CFD method and the Realizable k–ε turbulence model, this paper studies the cooling of the front windshield and the dehumidification performance in the cabin. First, the simplified model test is used to verify the accuracy of the simulation method and to testify that the parking ventilation can prevent frost from building up on the inside of a window. Second, the parking ventilation process is simulated to obtain the relationship between ventilation parameters, cooling and dehumidification effects, and flow field structures. The results show that the rate of flow of defrosting airflow is the key factor in terms of the cooling effect of the front windshield compared with all the other ventilation parameters. In addition to the high rate of flow of defrosting airflow, deflecting upward the airflow from the dashboard vent which are fully opened benefits the mixing and discharging of airflow. |
| Key words: parked car ventilation front windshield cooling cabin dehumidification defrosting ventilation parameter |
