潜艇应急上浮稳性研究

通过对应急上浮运动及高压空气吹除主压载水舱规律的简化,给出了潜艇应急上浮运动方程.将上层建筑的背水量作为临时加载,推导出应急上浮稳性计算方法.将非定常势流理论用于应急上浮运动流场分析与水动力计算.考虑了非线性自由表面条件,在应急上浮运动中随时进行流场以及自由表面的运动计算,从而实现了应急上浮运动与流场的耦合求解.采用将艇体及自由表面划分成四边形单元的方法计算流场,用Adams方法计算自由表面运动和艇体上浮运动.文中给出了某潜艇应急上浮运动和稳性的算例,计算结果验证了方法的可靠性.

Study on Submarine Stability during Emergency Surfacing

The motion equation of submarine emergency surfacing is given by simplifying the laws of the e-mergency surfacing motion and high-pressure air-blowing the main ballast water tank. The method of emergency surfacing stability calculation is given by taking the water on the submarine's superstructure as temporary payload. The unsteady potential flow theory is used to analyses the flow field and hydro-dynamic calculation. The coupling solution of the emergency surfacing motion and the flow field is obtained by solving the flow field and free surface elevation simultaneously, and considering the non-linear free surface condition. The hull and free surface are divided into quadrilateral units, and Adams method is used to calculate the submarine surfacing motion and the motion of free surface. The calculation example for one submarine is given here, which shows the reliable result by the method.