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| Influence Factors of Rainfall Simulation Based on Climate Wind Tunnel |
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| DOI：10.7643/issn.1672-9242.2023.02.018 |
| KeyWord:Chinese climate climate wind tunnel rainfall grade front windshield tilt angle raindrop diameter vehicle speed |
| Author | Institution |
| YI Hu-cheng |
CATARC Tianjin Automotive Engineering Research Institute Co., Ltd., Tianjin , China |
| XU Xiang |
CATARC Changzhou Automotive Engineering Research Institute Co., Ltd., Jiangsu Changzhou , China |
| MU Lian-song |
CATARC Tianjin Automotive Engineering Research Institute Co., Ltd., Tianjin , China |
| ZHANG Yi-lun |
CATARC Tianjin Automotive Engineering Research Institute Co., Ltd., Tianjin , China |
| WANG Yuan |
CATARC Tianjin Automotive Engineering Research Institute Co., Ltd., Tianjin , China |
| YU Yi-long |
CATARC Tianjin Automotive Engineering Research Institute Co., Ltd., Tianjin , China |
| XU Jun-fang |
CATARC Tianjin Automotive Engineering Research Institute Co., Ltd., Tianjin , China |
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| Abstract: |
| The work aims to study the relationship between natural rainfall and vehicle climate wind tunnel simulated rainfall, and obtain the empirical formula of rainfall setting in Chinese climate, so as to provide a theoretical basis for the setting of vehicle climate wind tunnel simulated rainfall. The characteristics and differences between natural meteorological rainfall and vehicle climate wind tunnel simulated rainfall were analyzed theoretically, and the factors affecting the vehicle climate wind tunnel simulated rainfall were studied. Under the condition of no wind, the factors affecting the rainfall of vehicle climate wind tunnel included meteorological rainfall, tilt angle of front windshield, raindrop diameter and vehicle speed. According to the vehicle speed, the rainfall was divided into two modes:vehicle stop and driving. An empirical formula for simulating rainfall in vehicle climate wind tunnel combined with Chinese climate was proposed. At the same rainfall grade, the rainfall of vehicle climate wind tunnel during vehicle stop is greater than that during driving. When the meteorological rainfall grade is short-term moderate rain, the rainfall setting value of the driving vehicle increases exponentially with the vehicle speed. |
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