Nonlinear Wave Making Resistance Calculation for Large Ships in Restricted Waterways

The development of the maritime transportation industry has led to more frequent use of large ships, but they are affected significantly by wave making resistance during navigation. In order to improve the performance of the calculation model of wave making resistance of large ships, a hybrid optimization algorithm FA-SSA is constructed by combining firefly algorithm and squirrel search algorithm. By introducing the luminance and attraction mechanism of fireflies, the algorithm enhances the global and local search ability of squirrel search algorithm. Then, based on FA-SSA and computational fluid dynamics, a new calculation model of ship wave making resistance is established. The experimental results show that in the performance comparison of the hybrid optimization algorithm, the F-value and G-value of FA-SSA reached 85.2% and 92.3%, respectively, which was significantly better than other comparison algorithms, reflecting its high efficiency in solving complex optimization problems. Further, in the comparison experiment of the ship wave making resistance calculation model, the mean memory consumption of the proposed model was only 883.3Mb, and the error value was as low as 0.0086, which is significantly better than the traditional model, and the calculation accuracy and efficiency are significantly improved. The above results show that the model can accurately and efficiently calculate the nonlinear wave making resistance value of large ships on restricted waterways, which is of great value to promote the development of maritime transportation industry. © 2024 Slovene Society Informatika. All rights reserved.