HULL FORM OPTIMIZATION BY NONLINEAR PROGRAMMING (PART 1) - IMPROVEMENT OF PRISMATIC CURVE FOR MINIMIZING WAVE RESISTANCE

This paper describes an attempt to improve ship prismatic form, ie, longitudinal displacement distribution, for minimizing ship wave resistance. The method adopted represents the prismatic curve by use of a B-spline function, takes the coefficients of the B-spline as the design variables, and evaluates the wave resistance value by Michell approximation which assumes an infinite-draft ship form with the beam profile the same as the prismatic curve of the ship form considered. A feasible direction method is applied to the optimizing process including the wave resistance computation mentioned above. It was found that the convergence of the iterative optimizing process is quite rapid and steady, and that the method is useful for the practical initial design of ship forms, although it also leaves aspects for improvement such as the wave resistance calculation method and extension to the 3-dimensional case.

• Supplemental Notes:
  • J Kansai Soc Naval Arch, n 223, March 1995, p 29 [6 p, 12 ref, 1 tab, 14 fig]
• Authors:
  • Hamasaki
  • J-i
  • Himeno, Y
• Publication Date: 1995

Language

• Japanese

Subject/Index Terms

• TRT Terms: Hulls; Optimization; Wave resistance
• Old TRIS Terms: Hull form
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00710941
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM