Dynamics of Water Drop Driven by Plasma Actuation Base on Digital Image Projection Technique

View Video Presentation: https://doi.org/10.2514/6.2023-3777.vid Alternative-Current high voltage-driven surface dielectric barrier discharge (AC-SDBD) plasma actuation is a new concept of the anti-/de-icing method with no complicated mechanical structure and potential aerodynamic loss, which makes it potential to be the anti- and de-icing methods used by next-generation aircraft. AC-SDBD plasma actuation has not only aerodynamic effects, but also thermal, chemical and electromagnetic effects, etc. Many studies have shown that the coupling characteristics of aerodynamic and thermal effects are the main mechanisms of plasma icing control. In order to provide a deep mechanism description, the dynamics, and evaporation characteristics of water droplets under plasma actuation is of great significance and studied in the present paper. High-speed digital image projection (DIP) technology, particle image velocimetry (PIV) and surface infrared temperature measurement were simultaneously used to record the impact and post-impact process of water droplets on the surface of the plasma actuator. The thickness distribution and velocity distribution were quantitatively analyzed. Furthermore, the plasma driving force was calculated. The results show that plasma actuation can significantly change the dynamic characteristics of water droplet and cause a rapid evaporation under plasma thermal effect.