Mechanical analysis of the UUV operating near the underwater vehicle at different speeds and lateral distance
In order to explore the hydrodynamic influence of the underwater vehicle's flow fields on UUV at different lateral distance and speeds,the unsteady and steady numerical simulation of the UUV operating in the near fields of under-water vehicle was carried out by solving the RANS equation numerically with the real scale model.Firstly,a brief analysis was conducted on the variation of axial force,lateral force,and yaw moment coefficients with the axial position of a UUV operating parallel to an underwater vehicle in a uniform linear motion at different lateral distance and speeds.Based on this,the influence of lateral distance and speeds on the force of UUV was further explored,and the magnitude of their influence was analyzed.The results indicate that for axial forces,both speeds and lateral distance have a significant impact,with the ef-fect of speeds slightly greater than that of lateral distance;but for lateral forces and yaw moments,the influence of lateral dis-tance is much greater than that of speeds,and the effect of speeds can be basically ignored.
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