船舶压载水系统仿真模型研究

Research on the Simulating Model of Ship Ballast System

船舶压载水系统包括压载水泵、管路系统和压载水舱等。本文根据离心泵的原理建立了压载泵流量模型;对管路网络中的流量、压力计算公式进行线性化,采用矩阵方法建立了压载水管路模型;以船舶的横倾角ψ和纵倾角θ作为系统的控制参数,根据船舶的浮性及初稳性原理,利用小倾角稳性公式,建立了压载水系统的浮态计算模型;以某油轮为母型船进行仿真分析,结果显示应用此模型进行实船仿真能够使船舶在多种工况下保持平稳。

The ballast system is composed of ballast pumps, pipeline and ballast cabins. In the paper, model of ballast pump is established according to the principle of centrifugal pump. In pipeline network, the nonlinear formula on flux and pressure is linearized, and then the model of pipeline network is established by the way of matrix. According to principle of buoyancy and stability of ship, the model of buoyancy is also established, in which heeling angle and trimming angle and sea gauge are used as control parameters. As an example, an oil tanker is taken as simulated object, the result shows that ships can be balanced by use of the simulation model in some operating conditions.