Optimizasyon Sürecinde Alternatif Tekne Formlarının Denizcilik Performanslarının Değerlendirilmesi İçin Yeni Bir Yaklaşım

Abstract

Designing hull forms with superior seakeeping performance demands basic information about the correlation between hull form parameters and ship motions. Classical model testing is still seen to be the most accurate way to get information about wave-induced ship motion characteristics for a hull design. Besides, in the last decades, there is an increased interest in CFD simulations in hydrodynamic optimization studies. Generally, due to the sea environment is generally not definite at the preliminary design phase, hydrodynamic optimization of a ship in terms of seakeeping is realized by comparing response amplitude operator (RAO) graphs in head seas. However, in a systematic optimization study, it becomes impossible to compare these graphs because of the large number of variants. In this study, a new approach will be presented which enables numerical interpretation of a large number of RAOs for systematic optimization studies. A script is developed in order to convert graphical data into numerical and to enable automatic use in an optimization process. As a case study, a systematic planing hull series is developed with 120 variants and RAOs are obtained as a result of viscous CFD analysis. Finally, RAOs of all variants are compared by means of the suggested approach.