Analysis And Avoidance Of The Waves Of The Underwater Vehicle

Underwater vehicles such as submarines are the killers of the navy's implementation of strategic tactics.They have strong concealment,detectiveness and surprise.They are important means of warfare in modern naval warfare and also a manifestation of the comprehensive strength of national defense.While developing underwater navigation bodies and their corresponding supporting technologies,research on stealth technology,anti-submarine technology and evasive technology has also received attention from all countries.Although the detection technology of surface wave wakes has been studied at home and abroad,such as: spaceborne SAR,infrared detection,etc.,but the special traces of water surface caused by underwater vehicle movement,such as: hot and cold characteristics generated by hot wake The wakes of the hydraulic characteristics caused by the wake and the movement of the navigating body,especially the changes of the wake of the hydraulic features caused by the movement of the navigating body are still rare.In the field of ship shipboard resistance,the wake of the hydraulic characteristics caused by the movement of the ship is often referred to as the wake of the wave.The research on the wake of wave(corrugated map)is mostly limited to surface ships and the development is relatively mature.However,there are few studies on the wave wake caused by underwater vehicles.In order to predict the wake of the hydraulic characteristics caused by the underwater vehicle movement,this paper firstly establishes an analysis model of the wave wake and wave resistance of the underwater vehicle based on the potential flow Rankine method.The theoretical basis and numerical techniques of the potential flow Rankine panel model are introduced.The convergence of the numerical model was systematically tested by Newman slender body and compared with other published data.The wave-making characteristics of Newman slender body were discussed and analyzed in detail.Then,based on the RANS equation,this paper uses the Simple algorithm to solve the pressure-velocity coupling term and establishes a CFD method for solving the wave resistance.The wave-making resistance and related flow field characteristics of the submarine sailing near the surface are simulated.Firstly,the Newman slender body model is used to verify the convergence.The stacking resistance technique is used to calculate the wave-making resistance coefficient when sailing at different speeds.The numerical simulation results are in good agreement with the values in the literature,indicating the accuracy of the method of stacking numerical values used in this paper.Then the method is used to calculate the wave-making resistance of the SUBOFF submarine model in different bare speeds at different speeds in the case of bareboats.Then the submarine is studied differently in the case of only installing the cockpit,the rear wing and installing the full body.The wave-making characteristics of speed and deep-dive voyage explored the influence of the existence of the possession on the calculation results,and explained the reasons for the related results from the flow field perspective.The research shows that the wave resistance coefficient of the submarine reaches the maximum when the Fr is 0.5,and when the dive depth is close to 0.5 times the length of the boat,the free surface will not rise up;and the tail has a greater influence on the submarine wave.The cockpit and tail can interact to eliminate the effects;vortices can form in the cockpit,tail,and other shapes on the surface of the submarine,causing changes in the wave resistance.This paper can provide reference for the numerical simulation research of submarine wavemaking problem and has guiding significance in submarine design optimization.