Analysis of Hydrodynamic Characteristics of ROV for Underwater Inspection of Deep Sea Mining
In order to efficiently and stably mine deep sea mineral resources,it is necessary to monitor and maintain the underwater operation of deep sea mining systems.According to the needs of practical application,an underwater inspection robot(Remotely Operated Vehicle,ROV)is independently developed to assist the mining of submarine polymetallic nodules.Based on the computational fluid dynamics method,this paper studies the resistance,surface pressure and flow field streamline characteristics of ROV under two main motion modes of advance and retreat and heave.At the same time,the slip grid method is used to simulate the propeller,and the influence of propeller rotation on the hydrodynamic performance of ROV is analyzed.The results show that the ROV has good hydrodynamic performance when advancing and diving.The rotation of the propeller has a diversion effect on the internal flow field and wake area of the ROV,which reduces the negative pressure area and navigation resistance of the ROV.The rotation of the propeller aggravates the disorder of the internal flow field and deteriorates the hydrodynamic performance of the ROV when retreating and rising.
deep sea miningROVpropeller perturbationhydrodynamic performanceflow field
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