潜艇水下航行遭遇海洋锋险情应急预测仿真

On Emergency Prognosis Simulation of Submarine Passing Through Ocean Front

海洋锋作为海洋中普遍存在的一种现象,密度跃减幅度大时会危害水下航行潜艇安全,不同的应急措施所产生挽回效果截然不同,但目前缺乏有效的手段预测潜艇水下航行遭遇海洋锋险情应急操纵挽回效果。为了解决上述问题,将海洋锋模型所得出潜艇遭遇海洋锋所产生的负浮力与高压气吹除主压载水舱的排水模型所得出的正浮力和力矩同时代入潜艇垂直面运动方程,构建了潜艇遭遇海洋锋险情应急预测仿真模型。通过数值计算,仿真预测了潜艇遭遇三种典型密度锋时采用不同挽回措施的应急操纵效果。结果表明,潜艇遭遇跃减幅度较大的海洋锋时,仅采用车、舵的操纵无法挽回潜艇,必须及时使用高压气吹除主压载水舱,气、车、舵的综合使用是潜艇遭遇海洋锋应急操纵的最有效方式。

The ocean front is ,one kind of universal appearance,and seriously threatens the safe navigation of submarine.The result varies with emergency measures.However,there is lack of effective method to forecast the result of submarine passing through ocean front.In order to resolve the problem,the parameters of negative buoyancy computed wiht the mathematical model of ocean front and the parameters of positive buoyancy and moment computed by the mathematical model of emergency blowing were substituted into the vertical motion equation of submarine,so that the emergency prognosis simulation model was build.By numerical calculation,the emergency maneuver motion under three kinds of typical ocean front was simulated using various security measures.The simulation results indicate that handling the propeller and rudder can not save the submarine when crossing through the density front of step reduction,and "blowing the main ballast tank is necessary to recovery the submarine.The comprehensive use of the high -pressure gas,propeller and rudder is the most effective way of emergency maneuvers when a submarine passes through the ocean front.