Numerical Analysis of Drag Reduction Performance of Different Shaped Riblet Surfaces

Aiming to investigate the drag reduction performance of an antifouling shell rough surface, six different geometries of shell surface texture are simplified as V-shaped riblet, U-shaped riblet, space-V-shaped riblet, blunt-V-shaped riblet, L-shaped riblet, and ∩-shaped riblet. Five kinds of riblets have the same geometric features: groove height and grooved spacing. SST-k-ω model is adopted for the turbulence model. The flow field structure above the different shaped riblet surfaces as well as shear stress and turbulent kinetic energy are analyzed. Moreover, how the flow is influenced by different shapes of riblets is discussed. The knowledge gained in this study can provide theoretical reference for optimal groove surface design of a ship hull with drag reduction performance.

• Record URL:
  • https://doi.org/10.4031/MTSJ.50.1.9
• Record URL:
  • http://www.ingentaconnect.com/content/mts/mtsj/2016/00000050/00000001/art00008
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1623789
• Supplemental Notes:
  • Copyright © 2016 Marine Technology Society, Inc.
• Authors:
  • Bai, Xiuqin
  • Zhang, Xuan
  • Yuan, Chengqing
• Publication Date: 2016-1

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 62-72
• Serial:
  • Marine Technology Society Journal
  • Volume: 50
  • Issue Number: 1
  • Publisher: Marine Technology Society
  • ISSN: 0025-3324
  • Serial URL: http://ingentaconnect.com/content/mts/mtsj

Subject/Index Terms

• TRT Terms: Antifouling coatings; Drag; Fluid dynamics; Hulls; Marine fouling; Performance; Roughness; Structural shells; Turbulence; Vehicle design
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 01597571
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 28 2016 2:43PM