Overall Design And Lines Optimization Research Of A Large Submersible Barge Carrier

Large scale material transportation in South China Sea is a problem that has existed for a long time because of long distance,bad channel environment and other reasons.Now there are many problems in the transportation supplies: far distance,too much demand for goods,different berthing conditions in different islands,channel environment is bad and military and civilian material mix.These problems must be sloved.In order to solve the problem of material supply,this paper intends to design and develop a large submersible barge carrier,preliminary determination of the ship’s main dimensions,general layout,shape,calculate the main performance of the ship.Based on the preliminary design of ship shape,using Friendship software,the resistance coefficient of wave making is taken as the objective function,and the genetic algorithm is used to further optimize the hull head and tail.The wave resistance coefficient of ship shape after optimization is smaller than the original model.Import the optimizated model into the CFD software,the ship navigation and sailing diving water resistance performance under two conditions were calculated and analyzed,and provide the basis for the selection and matching of ship engine propeller behind.The calculation results of software friction resistance are compared with the calculation results of ITTC formula,and the feasibility of software calculation is verified.Import the optimizated model into software,the hydrodynamic performance of ship static and sailing condition was calculated under different conditions,the movement of the ship RAO calculation results,and analyzed the variation of wave period.Based on the calculation results of hydrodynamic performance under navigation condition,the motion and force condition of ship navigation are further calculated.Seakeeping is calculated by using CFD software and compares the calculation results.