Optimization of the research vessel hull form by using numerical simulaton

Abstract

This paper presents results of hull form optimization of a research vessel using numerical simulation. The object of the study is a newly built multi-purpose catamaran type research vessel, meant for geological and biological researches. The vessel reaches its full speed by using only 70% of total engine power. Further increase in power leads to hardly noticeable increase in speed. Vibration appears additionally in the wheelhouse area. This leads to study possible causes of negative propulsion effects. A hull form study and its optimization were taken as one of possible solutions. Traditional and standard series analysis methods of resistance evolution were not appropriate. The study was carried out using the method of successive approximations and computational fluid dynamics (CFD) algorithms. The flow lines around the hull of the vessel were analyzed and the optimal solution was chosen. Water resistance analysis was carried out to prove the efficiency of the chosen optimization decisions.