In view of the resistance and navigation safety of ships in extremely shallow waters,a nu-merical prediction method combining static balance equation with the calculation of the steady flow of the stack model was proposed.Analysis and comparison indicate that the method requires only one at-titude adjustment,and the attitude convergence error can be less than 5％.Compared with the model test,the calculation results show that when hi/Tm=1.18,the resistance prediction deviation is about 3％,the subsidence deviation is less than 2 mm,and the bottom speed prediction deviation is less than 5％.The method can effectively avoid the problem of solution failure caused by attitude fluctuation in the calculation process.It is characterized by good computational stability and convergence,and high calculation accuracy,and thus can serve as reference for numerical calculation of navigation perfor-mance of ships in shallow water.
关键词
限制航道/极浅水域/下沉量/静力平衡方程
Key words
restricted channel/extremely shallow waters/sinking of ships/static balance equation
维普
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