Study on the Skin-Friction Drag Reduction by Air Injection Using Computational Fluid Dynamics-Based Simulations

The skin-friction drag reduction by air injection have been investigated numerically for the turbulent boundary layers first on the underside of flat horizontal surfaces and secondly on the bottom of a real LNG carrier using unstructured finite-volume CFD solver for the Reynolds averaged Navier-Stokes equations. In the present flow computations, two different multi-phase models, such as the volume of fluid (VOF) and the Eulerian multi-phase (EMP), are adopted to investigate their performances in resolving two-phase flow patterns and estimating skin-friction drag reductions. Both VOF and EMP models have similar capability and accuracy in capturing the topology of ventilated cavities, so called ‘air pockets and branches’. However, EMP model is superior to VOF model in predicting quantitatively the percentage of frictional drag reduction by air injection for the cases of both a flat-plate model and an actual ship.

• Record URL:
  • https://doi.org/10.1007/978-981-15-4624-2_12
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9789811546235
• Supplemental Notes:
  • © Springer Nature Singapore Pte Ltd. 2021.
• Corporate Authors:

  Springer Singapore

  152 Beach Road
  Singapore,     189721
• Authors:
  • Kim, Hee-Taek
  • Kim, Hyoung-Tae
  • Kim, Jung-Joong
  • Lee, Dong-Yeon
• Conference:
  • 14th International Symposium of Practical Design of Ships and Other Floating Structures (PRADS 2019)
  • Location: Yokohama , Japan
  • Date: 2019-9-22 to 2019-9-26
• Publication Date: 2020-10

Language

• English

Media Info

• Media Type: Web
• Edition: 1
• Features: References;
• Pagination: pp 205-226
• Monograph Title: Practical Design of Ships and Other Floating Structures: Proceedings of the 14th International Symposium, PRADS 2019, September 22-26, 2019, Yokohama, Japan- Volume I
• Serial:
  • Volume: 1

Subject/Index Terms

• TRT Terms: Air injection systems; Fluid dynamics; Simulation; Skin friction; Wave drag
• Subject Areas: Hydraulics and Hydrology; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 01919030
• Record Type: Publication
• ISBN: 9789811546235
• Files: TRIS
• Created Date: May 20 2024 2:02PM