Liquid sheet formed by a Newtonian jet obliquely impinging on pro/hydrophobic surfaces. (April 2020)

• Record Type: Journal Article
• Authors: Yang, Li-jun; Li, Peng-hui; Fu, Qing-fei
• Is Part Of: International journal of multiphase flow. Volume 125(2020)
• Publication Date: 2020-04
• Subjects: Jet impinging -- Liquid sheet -- Hydrophobicity -- Sheet characteristics; Multiphase flow -- Periodicals; Écoulement polyphasique -- Périodiques; Multiphase flow; Periodicals; 620.1064
• DOI: 10.1016/j.ijmultiphaseflow.2019.103192
• Languages: English
• ISSNs: 0301-9322

Abstract

Highlights: A theoretical model of liquid sheet considering effects of surface pro/hydrophobicity was established. Method of controlling volume (CV) was applied to obtain the sheet characteristics. The effect of surface pro/hydrophobicity is considered in energy conservation equation to determine the sheet velocity. Theoretical model can well predict the liquid sheet shape at the azimuth angles between 0 ∘ and 150 ∘ . Abstract: The collision process between a Newtonian liquid jet and pro/hydrophobic surfaces was investigated in this paper. Based on the theory of impinging-jets, a theoretical model of liquid sheet was established which comprehensively considered the effects of pro/hydrophobicity on surface tension force and the energy loss during the entire impinging process. The sheet parameters such as the size, velocity and thickness distribution were obtained. In order to validate the theoretical model, a corresponding experimental set-up has been developed, using deionized water as experimental working medium and 3 different pro/hydrophobic surfaces as experimental parts. The comparisons showed the theoretical results are in good agreement with the experimental data. In addition, the influence of surface pro/hydrophobicity on the sheet characteristics was theoretically discussed, and the results showed the surface pro/hydrophobicity could significantly affect the size of liquid sheet on solid surface.