Investigation on superhydrophilic surface with porous structure: Drag reduction or drag increasing
作者: Lei TangZhixiang ZengGang WangEryong LiuLongyang LiQunji Xue
作者单位: 1Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Science, Ningbo 315201, China
2University of Chinese Academy of Sciences, 100049 Beijing, China
刊名: Surface & Coatings Technology, 2017, Vol.317 , pp.54-63
来源数据库: Elsevier Journal
DOI: 10.1016/j.surfcoat.2017.03.048
关键词: Drag reductionSuperhydrophilic TiO 2 filmSol-gelPorous structureFEM simulationVortex
英文摘要: Abstract(#br)In this paper, different apertures of superhydrophilic porous TiO 2 films are fabricated by sol-gel method with PEG2000 additive. The drag reduction effect of the films is investigated through experiment of falling-ball method and FEM simulation. The larger PEG2000 content, the bigger size and the more regular and homogeneous of the pores. The joint action of anatase crystal, hydroxyl groups and water molecules absorbed on the surface and porous structure causes the superhydrophilicity. The resistance test shows that when the addition amount of PEG2000 changes from 0.25g to 2g, the drag reduction efficiency increases from −17.9% to 8.6% and −16.8% to 9.4% with 12mm and 25...
全文获取路径: Elsevier  (合作)
影响因子:1.941 (2012)

  • reduction 减少
  • structure 构造
  • simulation 模拟
  • porous 多孔的
  • surface 
  • increasing 增加的
  • FEM Finite-Element Method