Effects of mixed electric field on characterization of electrohydrodynamics drying system

Document Type : Scientific Research Manuscript


1 Laser and Plasma Research Institute, Shahid Beheshti University

2 Laser and Plasma research institute, Shahid Beheshti University


In this paper, we present a new structure of applying two electrical power supplies to generate ionic wind.
In this configuration, two power supplies were applied simultaneously with a modulated voltage to an
electrohydrodynamic (EHD) system then corona discharge parameters and EHD thrust characterization
was investigated by a corona dryer mechanism. The EHD thrust experiments were performed with a pin
to plate and SDBD arrangements. The results show that with the simultaneous application of two power
supplies the drying rate in a drop of water as a standard sample was greatly enhanced and the drying time was reduced. Thus, the total evaporation was occurred in 1 minute in the SDBD structure with a power of 7 watts and in 1.5 minutes in pin to plate structure with a power of 2.5 watts. Eventually, it was observed that the use of mixed electric fields enhances the ionic wind, hence increases the non-thermal evaporation process significantly. Furthermore, the drying rate has grown notably In SDBD configuration.