Selecting optimization ship form scheme is an important content in the process of concept design of ship. Multi-objective fuzzy decision-making model for ship form demonstration is set up according to the fuzzy patter...Selecting optimization ship form scheme is an important content in the process of concept design of ship. Multi-objective fuzzy decision-making model for ship form demonstration is set up according to the fuzzy pattern-recognition theory. Weight coefficients of each target of ship form scheme are determined by information entropy and individual subjective partiality. This model is used to select the optimal ship form scheme, the example shows that the model is exact and the resuh is credible. It can provide a reference for choosing the optimization scheme of ship form.展开更多
The design and optimization of ship hull forms play a crucial role in enhancing the performance and efficiency of marine vessels.This study focuses on integrating a cylindrical central body part within a conventional ...The design and optimization of ship hull forms play a crucial role in enhancing the performance and efficiency of marine vessels.This study focuses on integrating a cylindrical central body part within a conventional ship hull to explore its impact on hydrodynamic characteristics and overall vessel performance.The research employs hydrodynamical concepts,parametric studies,and optimization algorithms to analyze the design space systematically.The aim of including the cylindrical central body is to investigate its influence on reducing resistance,improving fuel efficiency,and enhancing maneuverability.A new optimization model based on the cylindrical body inclusion in the hull form is developed.The existing generalized reduced gradient(GRG)optimization method is also adopted to determine the accuracy of the proposed methodology.It is revealed that the resistance predicted by the GRG method is much closer to the original result of the parent hull form.A container vessel is taken as a case study example.The new,simplified,approach developed here provides a greater reduction in the resistance values of the case study vessel.Hence,the adoption of a cylindrical hull form in ship design can improve hydrodynamic performance.Although the results from the GRG method and the new scheme agree within the speed range of 0-5 m/s,some deviations are noted.In conclusion,it is observed that although the inclusion of the cylindrical body together with the adoption of the optimum design scheme is capable of improving the resistance performance of a ship,further studies are necessary to understudy the effects of this approach on the other vessel performance metrics.展开更多
文摘Selecting optimization ship form scheme is an important content in the process of concept design of ship. Multi-objective fuzzy decision-making model for ship form demonstration is set up according to the fuzzy pattern-recognition theory. Weight coefficients of each target of ship form scheme are determined by information entropy and individual subjective partiality. This model is used to select the optimal ship form scheme, the example shows that the model is exact and the resuh is credible. It can provide a reference for choosing the optimization scheme of ship form.
文摘The design and optimization of ship hull forms play a crucial role in enhancing the performance and efficiency of marine vessels.This study focuses on integrating a cylindrical central body part within a conventional ship hull to explore its impact on hydrodynamic characteristics and overall vessel performance.The research employs hydrodynamical concepts,parametric studies,and optimization algorithms to analyze the design space systematically.The aim of including the cylindrical central body is to investigate its influence on reducing resistance,improving fuel efficiency,and enhancing maneuverability.A new optimization model based on the cylindrical body inclusion in the hull form is developed.The existing generalized reduced gradient(GRG)optimization method is also adopted to determine the accuracy of the proposed methodology.It is revealed that the resistance predicted by the GRG method is much closer to the original result of the parent hull form.A container vessel is taken as a case study example.The new,simplified,approach developed here provides a greater reduction in the resistance values of the case study vessel.Hence,the adoption of a cylindrical hull form in ship design can improve hydrodynamic performance.Although the results from the GRG method and the new scheme agree within the speed range of 0-5 m/s,some deviations are noted.In conclusion,it is observed that although the inclusion of the cylindrical body together with the adoption of the optimum design scheme is capable of improving the resistance performance of a ship,further studies are necessary to understudy the effects of this approach on the other vessel performance metrics.
