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| Follow Features of Water Droplets in Wind Tunnel |
| Received:August 17, 2019 Revised:September 29, 2019 |
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| DOI：10.7643/issn.1672-9242.2020.02.016 |
| KeyWord:wind tunnel follow features particle size |
| Author | Institution |
| KONG Shao-kang |
Beijing Yishengtaihe Technology Co., Ltd, Beijing , China |
| DU Li-jie |
Beijing Yishengtaihe Technology Co., Ltd, Beijing , China |
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| Abstract: |
| The paper aims to obtain the optimal combination of spray nozzle arrangement on the airfoil and wind tunnel test speed of the windshield heating and dewatering system test platform and obtain the following characteristics of the small water droplets along the wind tunnel, the mass fraction and the uniformity at the outlet of the wind the wind tunnel. The wind tunnel and nozzle parts of the windshield heating and dewatering system test platform were modeled and simulated through numerical simulation. There were 8 experimental processes of sixty uniformly spray nozzles on seven airfoils and four different inlet wind speeds and two nozzle test parameters were simulated. The regularity of small water droplet follow feature along the wind tunnel under different experimental conditions and the distribution result of small water droplets at the exit of the wind tunnel were obtained.The results showed that the smaller the wind tunnel speed, the better the divergence of nozzle and the worse the follow feature. On the contrary, the larger the wind tunnel speed, the worse the divergence of nozzle and the worse the follow feature of small water droplets. With the increased of wind speed, the mass fraction of small water droplets at the outlet of wind tunnel first rises and then decreases, and the uniformity becomes better with the increase of wind speed. |
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