Optimization of volumes and longitudinal locations of trim and compensation tanks for underwater vehicles using non-dominated sorting genetic algorithm Ⅱ

Underwater vehicles have been recognized as a key strategic asset due to the increasing uncertainty of international situations and national security. For their design and construction, it is necessary to develop preliminary design approaches to determine the volumes and longitudinal locations of the tanks while considering the minimum design requirements. A multi-objective optimization technique was applied for optimization of the volumes and longitudinal locations. A concept desgn procedure was constructed to determine volumes and longitudinal locations of trim and compensation tanks. The feasibility of designed tanks was assessed after verifying in-house code for evaluating the trim-compensation polygon. The design variables, constraints, and objective functions were formulated to define an optimization problem using NSGA-Ⅱ. The feasibility of the constructed approach was reviewed through a comparative study considering different constraints. The applicability of the constructed approach was confirmed by investigating the effect of requested number of trim and compensation tanks.