The invention relates to a ship cabin inflow floating state calculation method based on a model. The method comprises the steps that S1, the total weight of a ship after inflow and the center-of-gravity position G1 after change are calculated; s2, establishing an initial buoyancy center B, an initial gravity center G, a gravity center G1 after water inflow and an intersection point B'of a horizontal line passing through the buoyancy center B and a vertical line passing through the gravity center G1 in the model, taking a point P on the BB ', connecting G1P, and making a vertical plane of the G1P as a water plane WpLp model; s3, the height of the WpLp is determined through a dichotomy method in the G1P direction, and the buoyancy center position Bp under the WpLp is obtained based on the model; s4, according to the change rule of the buoyancy center position along with the movement of the P point, determining the bipartite direction of the P point on the BB ', and starting iterative calculation; and S5, repeating S3 to S4 until the linear distance between the point Bp and the G1P is smaller than the given precision, namely, considering that the point Bp and the G1P are collinear, and the state is the final balance floating state after water enters the cabin. The method takes a final steady-state balance condition as a unique constraint condition, and is wide in application range; and by researching the buoyancy center movement rule, a convergence criterion is provided, and the efficiency and precision are improved.

    本发明涉及一种基于模型的船舶舱室进水浮态计算方法,S1、计算进水后船舶总重量△及变化后的重心位置G1;S2、在模型中建立初始浮心B、初始重心G、进水后重心G1、过浮心B水平线与过重心G1垂直线的交点B',在BB'上取一点P,连接G1P,做G1P的垂直面作为水线面WpLp模型;S3、根据△沿G1P方向通过二分法确定WpLp高度,基于模型得到WpLp下浮心位置Bp;S4、根据浮心位置随P点运动变化规律,确定P点在BB'上二分的方向,开始迭代计算;S5、重复S3至S4,直到Bp点与G1P直线距离小于给定精度,即认为Bp与G1P共线,该状态即为舱室进水后的最终平衡浮态。本发明以最终稳态平衡条件为唯一约束条件,适用范围广;通过研究浮心运动规律,提出了收敛准则,提高效率和精度。


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    Title :

    Model-based ship cabin inflow floating state calculation method


    Additional title:

    一种基于模型的船舶舱室进水浮态计算方法


    Contributors:
    LING HAO (author) / XIAO NITU (author) / CHEN CAN (author) / LI HANG (author) / ZHOU LING (author)

    Publication date :

    2024-03-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS




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