Hull-form optimization of a container ship based on bell-shaped modification function

Abstract

In the present study, a hydrodynamic hull-form optimization algorithm for a container ship was presented in terms of the minimum wave-making resistance. Bell-shaped modification functions were developed to modify the original hull-form and a sequential quadratic programming algorithm was used as an optimizer. The wave-making resistance as an objective function was obtained by the Rankine source panel method in which non-linear free surface conditions and the trim and sinkage of the ship were fully taken into account. Numerical computation was performed to investigate the validity and effectiveness of the proposed hull-form modification algorithm for the container carrier. The computational results were validated by comparing them with the experimental data.

Keywords

• Hydrodynamic hull-form optimization
• Bell-shaped modification function
• Sequential quadratic programming (SQP)
• Container carrier
• Rankine source panel method