Numerical Calculation of Interference Force and Simulation of Navigation Motion of Underwater Vehicles Under the Influence of Ocean Currents

Abstract Deep sea submersible simulation has become an effective means of predicting the motion of deep-sea submersibles. The deep-sea operating environment is complex, and deep-sea submersibles are often affected by the interference of ocean currents. This article combines CFD numerical calculation method and six degree of freedom motion simulation modeling method to conduct simulation research on direct flight motion under ocean current interference. This article takes a deep-sea manned submersible as the research object, obtains the lateral ocean current interference force through numerical calculation, and applies the calculated ocean current interference force information to the motion equation of the deep-sea submersible, so as to simulate and study the motion response of the submersible to ocean currents during actual navigation. By comparing with the motion under no ocean current conditions, it can be seen that ocean current has a significant impact on heading and attitude. This study can provide reference for practical manipulation and has certain engineering significance.