|
| Experimental Study on the Spray Droplet Size Characteristics of Various Test Platforms |
| |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2022.06.009 |
| KeyWord:spray size distribution heat and mass transfer icing wind tunnel medium volume diameter |
| Author | Institution |
| CHEN Shu-yue |
Key Laboratory of Icing and Anti/De-icing, China Aerodynamics Research and Development Center, Sichuan Mianyang , China |
| GUO Xiang-dong |
Key Laboratory of Icing and Anti/De-icing, China Aerodynamics Research and Development Center, Sichuan Mianyang , China |
| CHEN Chen |
Key Laboratory of Icing and Anti/De-icing, China Aerodynamics Research and Development Center, Sichuan Mianyang , China |
| LIU Sen-yun |
Key Laboratory of Icing and Anti/De-icing, China Aerodynamics Research and Development Center, Sichuan Mianyang , China |
| LAI Qing-ren |
Key Laboratory of Icing and Anti/De-icing, China Aerodynamics Research and Development Center, Sichuan Mianyang , China |
|
| Hits: |
| Download times: |
| Abstract: |
| Since the movement and heat and mass transfer of water droplets are affected by the environment easily, the spray droplet size characteristics of various test platforms are different. In this paper, the effects of the environmental differences on spray droplet size are studied in experiments. The droplet size measurements were carried out on three test platforms of the nozzle test bench, open-circuit wind tunnel, and closed-circuit icing wind tunnel. Then the measurement results were compared and analyzed. The results show that the variation regularity of the spray dMVD with the pressure is obvious in each platform, that is, the dMVD increase with the increase of water pressure, and decrease with the increase of air pressure. For the working condition of dMVD≤30 μm, the dMVD measurement results of three test platforms are close, while the size distributions are different. For the working condition of dMVD>30 μm, the dMVD of spray in the open-circuit wind tunnel and closed-circuit icing wind tunnel are larger than those of the nozzle test bench, and the size distributions shift in the direction of large particles. Environmental factors such as airflow temperature, velocity, ambient humidity, turbulence and platform configuration all have a certain influence on the spray droplet size. Under multi-factor coupling action, the evaporation, breakup, collision and coalescence of droplets in the icing wind tunnel are more intense, which causes differences in spray droplet size characteristics among test platforms. |
| Close |
|
|
|