NUMERICAL COMPUTATION OF 3-D FREE SURFACE FLOWS BY N-S SOLVER AND DETECTION OF SUB-BREAKING

The Navier-Stokes equation is directly solved by the finite- difference method to simulate three-dimensional viscous flow fields with free-surface around a Wigley model. Body-fitted coordinates, a non-staggered mesh system and third-order upstream differences for the convection terms are used. The solution procedure is a time- marching calculation of the velocities, followed by a pressure field solution in which the pressure iterations are made to reach convergence. Grid schemes and computing domains are closely examined. It is found that either a narrow domain or a coarse grid system will suppress the development of the free-surface elevation. The computational results for flow around the bow agree well with experimental results even though the Reynolds number is not the same. Results for stern flow, however, do not. This may be partially due to the difference in the Reynolds number. The criterion for the sub-breaking is applied to the computed results. It detects the appearance of sub-breaking waves in the course of computation. The results correspond to observed free-surface flows.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/05148499
• Supplemental Notes:
  • Journal article
• Authors:
  • Kwag, S
  • Shin, M
  • MORI, K
• Publication Date: 1989-12

Media Info

• Features: References;
• Pagination: 8 p.
• Serial:
  • Journal of the Society of Naval Architects of Japan
  • Volume: 166
  • ISSN: 0514-8499

Subject/Index Terms

• TRT Terms: Flow; Fluid dynamics; Free surface; Mathematical models; Numerical analysis
• Uncontrolled Terms: Fluid flow; Navier Stokes equations
• Old TRIS Terms: Sub-breaking
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00659817
• Record Type: Publication
• Source Agency: Maritime Technical Information Facility
• Files: TRIS
• Created Date: Jul 21 1994 12:00AM