Journal of Marine Science and Application

, Volume 6, Issue 3, pp 58–61

Experimental research on friction-reduction with super-hydrophobic surfaces

  • Jia-peng Zhao
  • Xiang-dang Du
  • Xiu-hua Shi
Article

DOI: 10.1007/s11804-007-7007-3

Cite this article as:
Zhao, J., Du, X. & Shi, X. J. Marine. Sci. Appl. (2007) 6: 58. doi:10.1007/s11804-007-7007-3

Abstract

Many recent studies have confirmed the existence of liquid slip over particular types of solid surfaces, and these so-called super-hydrophobic surfaces have been shown to generate effective liquid slip because of the air trapped between the surface structures. In this paper, based on boundary layer theory, the microscopic structure of the super-hydrophobic surface is analyzed. The liquid slip effect on friction-reduction over super-hydrophobic surfaces under various flow conditions is investigated by experiments with a flume and water tunnel. The experimental results show that the greatest amount of drag-reduction that can be achieved is 8.76% at a low Re.

Key words

liquid slipsuper-hydrophobicboundaryfriction-reductionReynolds number

CLC number

0353.5

Copyright information

© Harbin Engineering University and Springer-Verlag GmbH 2007

Authors and Affiliations

  • Jia-peng Zhao
    • 1
  • Xiang-dang Du
    • 1
  • Xiu-hua Shi
    • 1
  1. 1.College of Marine EngineeringNorthwestern Polytechnical UniversityXi’anChina