| The development of underwater exploration technology is an important support for the development of water confrontation,marine environmental monitoring and resource development.The new principle of non-acoustic detection technology based on water flow field information can effectively make up for the limitation of the existing acoustic detection technology and is a new direction for the development of underwater detection technology.In this paper,the underwater detection technology based on the flow field information of relative motion flow between underwater objects is studied.We obtain the law of the correlation between the characteristic parameters of the obstacle and the characteristics of the flow field around the body of motion and establish the judgment criterion model of the obstacle for the detection of the body of motion,which lays the foundation for the development and application of the new underwater detection technology.The testing system of water flow parameters of underwater motion platform was designed and established,and the towing test of underwater motion object was carried out.The interference effect of the characteristic parameters of obstacles and motion object on the head pressure changes of motion object was analyzed.The theoretical derivation of this new underwater exploration method was systematical y deduced.A simplified physical model of the flow field of the underwater sports platform was constructed and a numerical simulation analysis algorithm of the underwater motion platform / movement obstacle flow field was established.The numerical simulation method is used to systematical y analyze the driving law of the moving motion characteristic parameters on the flow field and the influence of the factors.The results of numerical simulation are discretized by flow network analysis method,and the interference of the characteristic parameters of static obstacles on the flow field around the moving motion is obtained.The numerical simulation method is used to systematically analyze the interference effect of the moving obstacle position and motion parameters on the flow around the underwater platform and form the diagnostic criteria for detection of obstacles in sports,which lay the theoretical and data foundation for the development and application of this new underwater exploration technology. |
