To study the effects of airflow on droplet shape changes after collision with different surfaces,the volume of fluid(VOF)method was employed to simulate droplet impingement with different surfaces with va-rious wettabilities,with the contact angles of 60°,70°,90°,120°,and 160°,at initial velocities of 0.22 and 0.44 m/s under a transverse airflow of 0.1 m/s.The results indicate that the impact velocity and the surface contact angle significantly influence droplet morphology.The impact velocity directly affects the spreading process.The high-impact velocity rapidly leads to maximum spreading.Larger contact angles reduce the time to reach the maximum spreading diameter and accelerate the attainment of maximum spreading.In the trans-verse airflow field,the wetting areas of droplets increase by 0.95％to 9.91％compared to those of the no-flow case.The research results reveal the impact of airflow on the droplet behaviors and provide practical guid-ance for optimizing droplet management in air handling systems.
transverse airflowdroplet impingementspreading and reboundingwettabilitycontact angle
维普
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