Experimental and numerical investigation on a liquid jet impinging on a vertical superhydrophobic surface: Spreading and reflection

Kibar A.

Progress in Computational Fluid Dynamics, cilt.18, ss.150-163, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 18
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1504/pcfd.2018.091708
  • Dergi Adı: Progress in Computational Fluid Dynamics
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.150-163
  • Anahtar Kelimeler: liquid jet, computational fluid dynamics, CFD, superhydrophobic, reflection jet, volume-of-fluid method, VOF, FLOW PATTERNS, WATER JETS, FILMS, IMPINGEMENT, HEAT
  • Kocaeli Üniversitesi Adresli: Evet

Özet

In this study, the flow characteristics of an impinging circular liquid jet on a

superhydrophobic surface are examined both experimentally and numerically. A computational

fluid dynamics (CFD) program was used for comparison in terms of experimental results, and

data from the literature was used to reveal phenomena related to the spreading and reflection of a

liquid jet from a superhydrophobic surface. A piece of Brassica oleracea leaf with an apparent

contact angle of 160° was used as a superhydrophobic surface. A circular glass tube of 1.75 mm

inner diameter was used to produce a liquid jet. The Weber number, Reynolds number and the

inclination angles of the liquid jet were varied in the ranges of 20–105, 1,700–3,800 and 20°–40°,

respectively. The results indicate that the numerical predictions obtained using the CFD program

seem to show good agreement with the experimental data in terms of explaining the phenomena

of the flow (spreading, reflection, etc.) in all cases, and in providing more detailed information

about the spreading and reflection of a liquid jet on a superhydrophobic surface.