Liquid gasification phenomenon was observable in liquid-solid dielectric barrier discharge(DBD) experiments. Starting from classical thermodynamics, this study aimed at findingtile reason of liquid gasification in the DBD experiments. Fluid statics and electrohydrodynamicswere adopted to analyze the mechanism of phase transition from liquid to gas. The Sumotoeffect was also employed to visually explain the change in the pressure of fluid due to the electricfield. It was concluded from both theoretical analysis and experiment that the change in liquidpressure was a key factor causing liquid to gasify in DBD conditions. Furthermore, it was stressedthat the liquid pressure was affected by many parameters including liquid permittivity, voltage,electric intensity, size of the discharge space and uniformity of the electric field distribution, etc.All of them affected DBD liquid gasification. The related results would provide useful theoreticalevidence for multi-phase DBD applications.
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