Influence of blowing rate and sequence of main ballast tank on the emergency surfacing characteristics of submarine
In order to investigate the impact of the blowing rate and sequence of the main ballast water tank on the emergency surfacing characteristics of submarines,Suboff was taken as the research object.Based on RANS equation and overall dynamic grid technology,a simplified high-pressure air blowing model of the main ballast water tank was combined to construct a simulated calculation model for the emergency surfacing motion of submarines.By linearly applying buoyancy,the submarine emergency surfacing motion parameters varying with time were obtained under different blowing rates,blowing sequences,and time intervals at an ini-tial speed of 1m/s.The results show that the faster the blowing rate of the main ballast water tank is,the faster the hull water flows out,the smaller the amplitude of the pitch angle is,and the larger the amplitude of the roll angle is.Blowing out the water tank in the order of the bow,middle,and stern groups,as well as the mid-dle,bow,and stern groups,results in a larger longitudinal angle amplitude and faster upward buoyancy com-pared to simultaneous blowing out.Blowing out the water tank in the order of the bow,middle,and stern groups,results in faster water output compared to that in the order of the middle,bow,and stern groups.Un-der the same blowing sequence,the longer the time interval,the greater the amplitude of pitch angle and the surfacing time with an interval of 1.0 s is earlier than the other two working conditions.In all operating condi-tions,the highest point of surfacing occurred at 7.08 s in the condition of blowing out the water tank in the or-der of the bow,middle,and stern groups with a time interval of 1.0 s,which is 1.21 earlier than simultaneous blowing.The research results have certain guiding significance for the pressure design of high-pressure gas in submarines and the blowing strategy for emergency surfacing of real submarine.
main ballast tankemergency surfacingblowing rateblowing sequencebuoyancy
万方数据
维普
